学校要砌一面长25米、宽0.4米、高80厘米的围墙，如果每立方米，如果，每立方米用砖，500块，这 学校要砌一堵长25米,厚20米,高4米的砖墙,如果每立方米用...
\u5b66\u6821\u8981\u780c\u4e00\u9053\u957f25\u7c73\uff0c\u539a24\u5398\u7c73\uff0c\u9ad83\u7c73\u7684\u56f4\u5899\uff0e\u5982\u679c\u6bcf\u7acb\u65b9\u7c73\u7528\u7816520\u5757\uff0c\u4e00\u5171\u9700\u8981\u591a\u5c11\u5757\u781624\u5398\u7c73=0.24\u7c73\uff0c25\u00d70.24\u00d73\u00d7520\uff0c=18\u00d7520\uff0c=9360\uff08\u5757\uff09\uff0c\u7b54\uff1a\u780c\u8fd9\u9053\u56f4\u5899\u5171\u9700\u89819360\u5757\u7816\uff0e
\u539a\u597d\u50cf\u8be5\u662f20\u5398\u7c73\u5427\uff0c 20\u5398\u7c73=0.2\u7c73 \u4f53\u79ef=25*0.2*4=20\u7acb\u65b9\u7c73
\u7816\u5757\u6570=520*20=10400\u5757
25x0.4x0.8x500
=4000（块）
25×0.4×0.8×500＝4000
400
绛旓細80鍘樼背锛0.8绫 25x0.4x0.8x500 =4000锛堝潡锛
绛旓細24鍘樼背=0.24绫筹紝25脳0.24脳3脳520锛=18脳520锛=9360锛堝潡锛夛紝绛旓細鐮杩欓亾鍥村鍏遍渶瑕9360鍧楃爾锛
绛旓細24cm=0.24m,12cm=0.12m,6cm=0.06m (20*0.24*2)/(0.24*0.12*0.06)=9.6/0.001728 =556(鍧)
绛旓細25涔樹互2.8涔樹互0.4绛変簬28锛28涔樹互120绛変簬3360鍧楃爾
绛旓細鐮屼竴閬撻暱20绫炽佸0.24绫炽侀珮浜岀背鐨勫锛屾瘡绔嬫柟绫宠瑁525鍧楋紝闇瑕佷拱5040鍧楃爾銆20脳0.24脳2脳525=5040
绛旓細20脳0.24脳2=9.6锛堢珛鏂圭背锛夛紱525脳9.6=5040锛堝潡锛夛紱绛旓細瀛︽牎闇瑕涔5040鍧楃爾锛
绛旓細澧欑殑鎬讳綋绉负20*0.24*2=9.6绔嬫柟绫 闇瑕佺殑鐮栫殑鏁伴噺=525*9.6=5040鍧
绛旓細妤间富锛屼綘濂姐傜爾澧欑殑浣撶Н鏄20*0.24*2= 9.6绔嬫柟绫筹紝鐒跺悗姣忕珛鏂圭背鐢ㄧ爾525鍧楋紝鍐嶇敤鐮栧鐨勪綋绉箻姣忕珛鏂圭背鐢ㄧ殑鐮栵紙525锛夊潡锛屽嵆9.6*525=5040鍧楋紝灏辨槸闇瑕佷拱鐨勭爾浜嗐 绁濅綘瀛︿範杩涙锛屾垚缁╄秺鏉ヨ秺濂斤紒
绛旓細闀夸箻瀹戒箻楂樹箻浠525锛5040鍧楃爾
绛旓細浣撶Н20x0.24x2=9.6绔嬫柟绫525x9.6=5040鍧楃瓟 闇瑕5040鍧
