解决问题1.有一边长为6.5米的正方形果园,占地面积为多少平方米精确到十、分位 森林和海洋哪个净化空气好
\u6d77\u6d0b\u4e4b\u5fc3\u7a7a\u6c14\u51c0\u5316\u5668\u4f7f\u7528\u8bf4\u660e\u4e66\u77f3\u5bb6\u5e84\u7532\u919b\u68c0\u6d4b\u6cbb\u7406\u5b9a\u70b9\u4f01\u4e1a\u77f3\u5bb6\u5e84\u6bd4\u597d\u66f4\u597d\u73af\u4fdd\u5de5\u7a0b\u6709\u9650\u516c\u53f8\u603b\u7ecf\u7406\u5f20\u603b\u6559\u60a8\u5982\u4f55\u9009\u62e9\u7a7a\u6c14\u51c0\u5316\u5668?
\u3000\u3000\u7a7a\u6c14\u51c0\u5316\u5668\u53ef\u4ee5\u51cf\u8f7b\u5ba4\u5185\u6c61\u67d3\uff0c\u4f46\u662f\u4e5f\u4e0d\u80fd\u8fc7\u5206\u7684\u4f9d\u8d56\u5b83\uff0c\u7a7a\u6c14\u51c0\u5316\u5668\u5e76\u4e0d\u80fd\u53d6\u4ee3\u6253\u626b\u536b\u751f\uff0c\u5b9a\u671f\u6e05\u6d01\u5ba4\u5185\uff0c\u907f\u5f00\u6c61\u67d3\u9ad8\u5cf0\u671f\u5f00\u7a97\u901a\u98ce\u6362\u6c14\uff0c\u51cf\u5c11\u6c61\u67d3\u6e90\u624d\u662f\u63d0\u9ad8\u5ba4\u5185\u7a7a\u6c14\u8d28\u91cf\u7684\u6839\u672c\u4e4b\u9053\u3002
\u3000\u3000\u6d88\u8d39\u8005\u8be5\u5982\u4f55\u9009\u62e9\u7a7a\u6c14\u51c0\u5316\u5668?
\u3000\u3000\u6839\u636e\u77f3\u5bb6\u5e84\u7532\u919b\u68c0\u6d4b\u6cbb\u7406\u5b9a\u70b9\u4f01\u4e1a\u77f3\u5bb6\u5e84\u6bd4\u597d\u66f4\u597d\u73af\u4fdd\u5de5\u7a0b\u6709\u9650\u516c\u53f8\u603b\u7ecf\u7406\u5f20\u603b\u7684\u7ecf\u9a8c\uff0c\u5e94\u8be5\u4ece\u4e94\u4e2a\u65b9\u9762\u7740\u624b\u8003\u8651\u3002
\u3000\u30001.\u6839\u636e\u5bb6\u5ead\u7684\u9002\u7528\u9762\u79ef
\u3000\u3000\u4e0d\u540c\u529f\u7387\u7684\u7a7a\u6c14\u51c0\u5316\u5668\u9002\u7528\u9762\u79ef\u4e0d\u540c\uff0c\u5982\u679c\u623f\u95f4\u8f83\u5927\uff0c\u5e94\u9009\u62e9\u5355\u4f4d\u65f6\u95f4\u51c0\u5316\u98ce\u91cf\u8f83\u5927\u7684\u7a7a\u6c14\u51c0\u5316\u5668\u3002\u6bd4\u5982\u8bf4\uff0c25\u5e73\u7c73\u7684\u623f\u95f4\u9002\u5b9c\u7528\u989d\u5b9a\u98ce\u91cf200\u7acb\u65b9\u7c73\u6bcf\u5c0f\u65f6\u7684\u51c0\u5316\u5668\uff0c50\u5e73\u65b9\u7c73\u5de6\u53f3\u7684\u623f\u95f4\u5e94\u9009\u62e9\u989d\u5b9a\u98ce\u91cf400\u7acb\u65b9\u7c73\u6bcf\u5c0f\u65f6\u7684\u51c0\u5316\u5668\u3002\u6bcf\u4e2a\u4ea7\u54c1\u90fd\u4f1a\u6709\u8fd9\u9879\u53c2\u6570\uff0c\u6240\u4ee5\u5728\u8d2d\u4e70\u4e4b\u524d\u4e00\u5b9a\u8981\u770b\u597d\u3002
\u3000\u30002.\u6839\u636e\u51c0\u5316\u529f\u80fd
\u3000\u3000\u6839\u636e\u4f4f\u5b85\u7684\u7a7a\u6c14\u73af\u5883\u548c\u9002\u5408\u7684\u51c0\u5316\u6548\u679c\u6765\u9009\u62e9\u6240\u9700\u7684\u529f\u80fd\u3002\u7a7a\u6c14\u51c0\u5316\u5668\u7684\u529f\u80fd\u4e3b\u8981\u662f\u51c0\u5316\u3001\u6740\u83cc\u3001\u8fc7\u6ee4\u3001\u52a0\u6e7f\u7b49\uff0c\u4e0d\u540c\u7684\u4ea7\u54c1\u4f1a\u6709\u591a\u79cd\u529f\u80fd\u3002
\u3000\u3000\u6740\u83cc\uff1a\u9002\u7528\u4e8e\u957f\u671f\u4e0d\u901a\u98ce\u7684\u5ba4\u5185\u3002\u4e3b\u8981\u5371\u5bb3\uff1a\u7ec6\u83cc\u662f\u4eba\u7c7b\u7684\u5929\u654c\u3002\u8fd9\u91cc\u4e0d\u52a0\u8d58\u8ff0\u3002
\u3000\u3000\u52a0\u6e7f\uff1a\u9002\u7528\u4e8e\u5e72\u71e5\u7684\u5ba4\u5185\u73af\u5883\u3002\u4f18\u52bf\uff1a\u9002\u5f53\u52a0\u6e7f\u53ef\u4ee5\u7a33\u5b9a\u6728\u6750\u4e2d\u6c34\u5206\uff0c\u7eb8\uff0c\u7eba\u7ec7\u54c1\uff0c\u964d\u4f4e\u706b\u707e\u98ce\u9669\u548c\u9759\u7535\u529b\u800c\u4f7f\u8be5\u5730\u533a\u611f\u5230\u8212\u9002\u5b89\u5168\u3002
\u3000\u3000\u9664\u7532\u919b\uff1a\u9002\u7528\u4e8e\u65b0\u88c5\u4fee\u7684\u5ba4\u5185\u73af\u5883\u3002\u4e3b\u8981\u5371\u5bb3\uff1a\u7532\u919b\u662f\u539f\u6d46\u6bd2\u7269\uff0c\u80fd\u4e0e\u86cb\u767d\u8d28\u7ed3\u5408\uff0c\u5438\u5165\u9ad8\u6d53\u5ea6\u7532\u919b\u540e\uff0c\u4f1a\u51fa\u73b0\u547c\u5438\u9053\u7684\u4e25\u91cd\u523a\u6fc0\u548c\u6c34\u80bf\u3001\u773c\u523a\u75db\u3001\u5934\u75db\uff0c\u4e5f\u53ef\u53d1\u751f\u652f\u6c14\u7ba1\u54ee\u5598\u3002\u7c92\u5f84\u5728 3.5\u5fae\u7c73\u4ee5\u4e0b\u7684\u9897\u7c92\u7269\uff0c\u80fd\u88ab\u5438\u5165\u4eba\u7684\u652f\u6c14\u7ba1\u548c\u80ba\u6ce1\u4e2d\u5e76\u6c89\u79ef\u4e0b\u6765\uff0c\u5f15\u8d77\u6216\u52a0\u91cd\u547c\u5438\u7cfb\u7edf\u7684\u75be\u75c5\u3002
\u3000\u3000\u70df\u5c18\uff1a\u9002\u7528\u4e8e\u6709\u5438\u70df\u8005\u6216\u7070\u5c18\u7684\u7a7a\u95f4;\u4e3b\u8981\u5371\u5bb3\uff1a\u70df\u8349\u71c3\u70e7\u4ea7\u751f\u7684\u70df\u6c14\uff0c\u6240\u4ea7\u751f\u5177\u6709\u81f4\u764c\u4f5c\u7528\u7684\u7269\u8d28\u7ea640\u591a\u79cd\u3002\u5438\u70df\u662f\u80ba\u764c\u7684\u4e3b\u8981\u75c5\u56e0\u4e4b\u4e00\u3002
\u3000\u30003.\u6839\u636e\u51c0\u5316\u65b9\u5f0f
\u3000\u3000\u6839\u636e\u51c0\u5316\u65b9\u5f0f\u6765\u9009\u62e9\uff0c\u51c0\u5316\u65b9\u5f0f\u4e3b\u8981\u5206\u4e3a\u4e09\u7c7b\uff1aHEPA(\u9ad8\u6548\u7a7a\u6c14\u51c0\u5316)\u3001Nanoe(\u7eb3\u7c73\u6c34\u79bb\u5b50)\u3001\u51c0\u79bb\u5b50\u7fa4\u7a7a\u95f4\u3002
\u3000\u3000\u51c0\u79bb\u5b50\u7fa4\u7a7a\u95f4\uff1a\u5c06\u7a7a\u6c14\u7684\u51c0\u5316\u8fc7\u7a0b\u5206\u6210\u6740\u83cc\u548c\u8fc7\u6ee4\u4e24\u4e2a\u6b65\u9aa4\uff1a1\u3001\u9996\u5148\u5229\u7528\u7279\u6b8a\u7684\u79bb\u5b50\u7fa4\u91ca\u653e\u88c5\u7f6e\uff0c\u7a7a\u6c14\u51c0\u5316\u5668\u5728\u5de5\u4f5c\u524d\u4f1a\u9996\u5148\u91ca\u653e\u51fa\u5927\u91cf\u7684H+\u6b63\u79bb\u5b50\u548cO2-\u8d1f\u79bb\u5b50\uff0c\u8fd9\u4e9b\u79bb\u5b50\u7fa4\u548c\u7a7a\u6c14\u4e2d\u5e26\u6709\u6b63\u7535\u8377\u6216\u8005\u8d1f\u7535\u8377\u7684\u75c5\u83cc\u7ed3\u5408\u5438\u9644\u540e\uff0c\u7ecf\u8fc7\u5316\u5b66\u53cd\u5e94\u751f\u6210OH\u6c22\u6c27\u6839\u79bb\u5b50\u6d3b\u6027\u6c27\uff0cOH\u6c22\u6c27\u6839\u79bb\u5b50\u6d3b\u6027\u6c27\u53ef\u4ee5\u5c06\u75c5\u83cc\u7ec6\u80de\u4e2d\u7684\u86cb\u767d\u8d28\u7834\u574f\uff0c\u4ece\u800c\u6d88\u9664\u75c5\u83cc\u7684\u751f\u7269\u6d3b\u6027\u30022\u3001\u7ecf\u8fc7\u6d88\u6bd2\u540e\u7684\u7a7a\u6c14\u518d\u8fdb\u5165\u5c42\u5c42\u8fc7\u6ee4\u88c5\u7f6e\uff0c\u6700\u7ec8\u8f93\u51fa\u7684\u5c31\u662f\u51e0\u4e4e\u6ca1\u6709\u4e86\u75c5\u83cc\u3001\u7c89\u5c18\u3001\u7532\u919b\u3001\u5f02\u5473\u5e72\u51c0\u800c\u6e7f\u6da6\u7684\u7a7a\u6c14\u3002 \u590f\u666e\u662f\u76ee\u524d\u5e02\u573a\u4e0a\u4e3b\u8981\u5e94\u7528\u6b64\u79cd\u51c0\u5316\u65b9\u5f0f\u7684\u5382\u5546\u3002
\u3000\u3000HEPA(\u9ad8\u6548\u7a7a\u6c14\u51c0\u5316)\uff1a HEPA\u9ad8\u5bc6\u5ea6\u8fc7\u6ee4\u6750\u6599\u4e5f\u662f\u5f53\u524d\u7a7a\u6c14\u51c0\u5316\u9886\u57df\u6700\u5148\u8fdb\u7684\u7a7a\u6c14\u8fc7\u6ee4\u6750\u6599\u4e4b\u4e00\uff0c\u672c\u4eba\u5efa\u8bae\u5e7f\u5927\u6d88\u8d39\u8005\u5728\u8d2d\u4e70\u65f6\u5c3d\u91cf\u9009\u62e9\u5e26\u6709\u6b64\u6280\u672f\u7684\u4ea7\u54c1\uff0c\u5b83\u80fd\u5f88\u597d\u5730\u8fc7\u6ee4\u548c\u5438\u96440.3\u5fae\u7c73\u4ee5\u4e0a\u6c61\u67d3\u7269\uff0c\u5b83\u5bf9\u70df\u5c18\u3001\u53ef\u5438\u5165\u9897\u7c92\u7269\u3001\u7ec6\u83cc\u75c5\u6bd2\u90fd\u6709\u5f88\u5f3a\u7684\u51c0\u5316\u80fd\u529b\uff0c\u800c\u9644\u52a0\u50ac\u5316\u6d3b\u6027\u78b3\u5bf9\u5f02\u5473\u6709\u5bb3\u6c14\u4f53\u51c0\u5316\u6548\u679c\u8f83\u4f73\u3002\u76ee\u524d\u5e02\u573a\u4e0a\u98de\u5229\u6d66\u3001\u4e9a\u90fd\u3001\u4f0a\u83b1\u514b\u65af\u7b49\u5382\u5546\u4e3b\u8981\u5e94\u7528\u6b64\u79cd\u51c0\u5316\u65b9\u5f0f\u3002
\u3000\u3000Nanoe(\u7eb3\u7c73\u6c34\u79bb\u5b50)\uff1a\u7eb3\u7c73\u6c34\u79bb\u5b50\u7684\u4ea7\u751f\u9996\u5148\u9700\u8981\u7eb3\u7c73\u6c34\u79bb\u5b50\u53d1\u751f\u5668\u5c06\u6c34\u5206\u51dd\u805a\uff0c\u7136\u540e\u901a\u8fc7\u65bd\u52a0\u9ad8\u7535\u538b\u6765\u5206\u79bb\u6c34\u5206\u5b50\u800c\u4ea7\u751f\u7684\u5e26\u7535\u51c0\u6c34\u7c92\u5b50\u3002\u7eb3\u7c73\u6c34\u79bb\u5b50\u53ef\u4ee5\u968f\u7740\u51c0\u5316\u540e\u7684\u7a7a\u6c14\u6269\u6563\u5230\u623f\u95f4\u5404\u5904\u3002\u53ef\u4ee5\u4f7f\u5ba4\u5185\u7684\u7a7a\u6c14\u73af\u5883\u66f4\u52a0\u6e05\u65b0\u8212\u9002\u3002\u677e\u4e0b\u662f\u76ee\u524d\u5e02\u573a\u4e0a\u5e94\u7528\u6b64\u79cd\u51c0\u5316\u65b9\u5f0f\u6700\u4e3a\u666e\u904d\u7684\u5382\u5546\u3002
\u3000\u30004. \u7ef4\u4fee\u4fbf\u6377\u6027
\u3000\u3000\u8d2d\u4e70\u4e4b\u524d\u8fd8\u8981\u4e86\u89e3\u7a7a\u6c14\u51c0\u5316\u5668\u6e05\u6d17\u662f\u5426\u65b9\u4fbf\uff0c\u4e00\u822c\u7684\u7a7a\u6c14\u51c0\u5316\u5668\u53ea\u6709\u7c97\u6548\u6ee4\u7f51\u9700\u8981\u81ea\u5df1\u6e05\u6d17\uff0c\u5176\u4ed6\u90e8\u4ef6\u4e00\u822c\u9700\u8981\u5230\u7ef4\u4fee\u5546\u5904\u66f4\u6362\u6216\u7ef4\u4fee\u3002\u8d2d\u4e70\u4e4b\u524d\u9700\u5c06\u6b64\u4e8b\u786e\u8ba4\u6e05\u695a\u3002
\u3000\u30005.\u4f7f\u7528\u7684\u6301\u7eed\u6027
\u3000\u3000\u9009\u8d2d\u8be5\u4ea7\u54c1\u7684\u65f6\u5019\u8fd8\u8981\u7279\u522b\u5173\u6ce8\u4e00\u4e0b\u5b83\u7684\u4f7f\u7528\u5bff\u547d\uff0c\u867d\u7136\u4e0d\u8981\u6c42\u5b83\u80fd\u6c38\u8fdc\u4f7f\u7528\u4e0b\u53bb\uff0c\u4f46\u662f\u6700\u8d77\u7801\u5e94\u8be5\u4fdd\u8bc1\u6700\u57fa\u672c\u7684\u4f7f\u7528\u5bff\u547d\u3002
\u3000\u3000\u63d0\u9ad8\u5ba4\u5185\u7a7a\u6c14\u8d28\u91cf\u77f3\u5bb6\u5e84\u7532\u919b\u68c0\u6d4b\u6cbb\u7406\u5b9a\u70b9\u4f01\u4e1a\u77f3\u5bb6\u5e84\u6bd4\u597d\u66f4\u597d\u73af\u4fdd\u5de5\u7a0b\u6709\u9650\u516c\u53f8\u603b\u7ecf\u7406\u6709\u51e0\u70b9\u5efa\u8bae\uff0c\u9996\u5148\u5c3d\u53ef\u80fd\u7684\u51cf\u5c11\u6c61\u67d3\u6e90\uff0c\u6700\u597d\u4e0d\u8981\u5728\u5ba4\u5185\u4f7f\u7528\u590d\u5370\u673a\u3001\u9759\u7535\u9664\u5c18\u5668\u3001\u71c3\u6c14\u7089\u5177\uff0c\u88c5\u4fee\u65f6\u5c3d\u91cf\u4e0d\u4f7f\u7528\u77f3\u68c9\u677f\u7b49\u7b49\uff0c\u56e0\u4e3a\u4f1a\u4ea7\u751f\u81ed\u6c27\uff0c\u547c\u5438\u9053\u548c\u80ba\u90e8\u4f1a\u53d7\u5230\u5f71\u54cd\u3002\u5176\u6b21\u4fdd\u6301\u5ba4\u5185\u901a\u98ce\uff0c\u7a7a\u6c14\u8d28\u91cf\u8f83\u597d\u7684\u65f6\u5019\u591a\u6362\u6c14\uff0c\u7a7a\u6c14\u6c61\u67d3\u4e25\u91cd\u7684\u65e9\u665a\u9ad8\u5cf0\u671f\u95f4\uff0c\u8981\u5c11\u5f00\u7a97\u3002\u53ef\u4ee5\u5728\u5ba4\u5185\u653e\u4e00\u4e9b\u7eff\u690d\uff0c\u4e0d\u4f46\u53ef\u4ee5\u5438\u6536\u6709\u5bb3\u6c14\u4f53\uff0c\u8fd8\u80fd\u7f8e\u5316\u7a7a\u95f4\u3002\u62bd\u70df\u7684\u670b\u53cb\u5c3d\u91cf\u9009\u5728\u6237\u5916\u6216\u9633\u53f0\uff0c\u4ee5\u51cf\u5c11\u52a0\u91cd\u5ba4\u5185\u6c61\u67d3\u3002
\u8fd9\u4e2a\u6bcb\u5eb8\u7f6e\u7591\uff0c\u662f\u6d77\u6d0b\uff0c\u5149\u5408\u4f5c\u7528\u5236\u9020\u7684\u6c27\u6c14\u670990%\u4ee5\u4e0a\u6765\u6e90\u4e8e\u6d77\u6d0b\u85fb\u7c7b\u690d\u7269\u3002\u6d77\u6d0b\u7684\u6d6e\u6e38\u85fb\u7c7b\u4e5f\u662f\u6d77\u6d0b\u4f17\u591a\u751f\u7269\u98df\u7269\u94fe\u7684\u8d77\u70b9\u3002
正方形的面积=边长×边长。6.5×6.5=42.25平方米≈42.3㎡
希望帮你
绛旓細6.5脳6.5=42.25骞虫柟绫斥増42.3銕
绛旓細6.5x6.5=42.25=绾42.3骞虫柟绫
绛旓細涓夎褰㈡湁涓や釜瑙掓槸30掳瑙掞紝璇存槑鏄瓑鑵颁笁瑙掑舰锛岃繖鏍锋眰楂樻湁涓ょ鎯呭喌:鈶犲簳杈归暱6.5绫锛屽簳杈逛笂鐨勯珮=6.5/2脳tg30掳=3.25脳鈭3/3=1.88绫筹紱鑵颁笂鐨勯珮=6.5脳sin30掳=6.5脳1/2=3.25绫炽傗憽鑵伴暱6.5绫筹紝搴曡竟涓婄殑楂=6.5脳sin30掳=6.5脳1/2=3.25绫筹紱鑵颁笂鐨勯珮=6.5脳cos30掳=6.5脳...
绛旓細鍒嗙被璁ㄨ
绛旓細5绫筹紝涓涓涓30掳銆傚凡鐭杈归暱鐨勬病鏈夎鏄庡叿浣撴槸閭ｄ竴鏉¤竟锛屾垜浠氨鍋氫釜鍋囪銆傚鍥撅紱Sin30掳=AC/BC=1/2锛孋os30掳=BC/AB=(鈭3)/2 濡傛灉AC=6.5绫锛岄偅涔圓B=13绫筹紝BC=(13/2)鈭3;濡傛灉AB=6.5锛岄偅涔圓B=3.25绫筹紝BC=锛13/4锛夆垰3锛涘亣濡侭C=6.5锛岄偅涔圓B=(13/3)鈭3锛孉C=(13/6)鈭3 ...
绛旓細涓杈归暱6.5绫,鍙涓杈归暱1.6绫筹紝濡傛灉宸茬煡鐨勮繖涓ゆ潯杈规槸鐩磋杈圭殑璇濆氨鐢ㄦ鍒囧嚱鏁版潵绠楋紝濡傛灉鏈変竴鏉℃槸鏂滆竟鐨勮瘽锛屽氨鐢ㄦ寮﹀嚱鏁版潵绠
绛旓細缁抽暱 6.5*4=26dm 瀹 1/2*(26-8*2)=5dm 闈㈢Н 5*8=40dm2 40dm2=0.4m2
绛旓細璁句笉闈犲鐨勪袱杈归暱涓簒,鍒欏彟涓鏉¤竟闀夸负33-2x x*(33-2x)=130 瑙ｅ緱x1=10 x2=6.5 鍗抽潬澧欑殑涓杈归暱涓10绫,鍙涓杈归暱涓6.5绫 鎴栨槸闈犲鐨涓杈归暱涓6.5绫,鍙︿竴杈归暱涓10绫.
绛旓細宸茬煡,鍨傜洿楂樺害=6.5m,鍨傜洿楂樺害锛氬簳闈㈤暱=6.5锛氬簳闈㈤暱=1:0.75 鍒欏簳闈㈤暱=6.5x0.75=4.88绫 鍧￠暱=搴曢潰闀跨殑骞虫柟+鍨傜洿楂樺害鐨勫钩鏂,鐒跺悗寮鏍瑰彿 鏁咃細鍧￠暱=(4.88^2+6.5^2)^1/2 =(23.81+42.25)^1/2 =66.06^1/2 =8.13绫 1锛0.75鐨勫潯姣旓紝鍨傜洿楂樺害鏄6.5绫锛屽潯闀夸负8.13绫炽
绛旓細鍏ㄩ暱=6.5梅(1鈥1/6)=7.8绫 濡傛灉鏈鏈変粈涔堜笉鏄庣櫧鍙互杩介棶锛屽鏋滄弧鎰忚鐐瑰嚮鍙充笂瑙掑ソ璇勫苟鈥滈噰绾充负婊℃剰鍥炵瓟鈥濆鏋滄湁鍏朵粬闂璇烽噰绾虫湰棰樺悗锛屽彟澶栧彂骞剁偣鍑绘垜鐨勫ご鍍忓悜鎴戞眰鍔╋紝绛旈涓嶆槗锛岃璋呰В锛岃阿璋備綘鐨勯噰绾虫槸鎴戞湇鍔＄殑鍔ㄥ姏銆傜瀛︿範杩涙锛丱(鈭鈭)O锛屼簰鐩稿府鍔╋紝绁濇柊骞村揩涔愶紒
