幸福街在街心广场修建一个圆形花坛，周长是25.12米。在花坛的周围又建了一条宽1米的小路。
\u53e4\u7530\u793e\u533a\u6253\u7b97\u4fee\u5efa\u4e00\u4e2a\u82b1\u575b\uff0c\u5468\u957f25.12\u7c73\uff0c\u5728\u82b1\u575b\u7684\u5468\u56f4\u53c8\u56f4\u4e00\u6761\u5bbd1\u7c73\u7684\u73af\u5f62\u5c0f\u8def\uff0c\u8fd9\u6761\u8def\u7684\u9762\u79ef\uff1f25.12\u00f73.14\u00f72=4 4+1=5
3.14\u00d7\uff085\u7684\u5e73\u65b9-4\u7684\u5e73\u65b9\uff09
=3.14\u00d7\uff0825-16\uff09
=3.14\u00d79
=28.26
\u5185\u534a\u5f8431.4\u00f73.14\u00f72=5\u7c73
\u5916\u534a\u5f845+1=6\u7c73
\u9762\u79ef3.14\u00d7\uff086\u00d76-5\u00d75\uff09
=3.14\u00d711
=34.54\u5e73\u65b9\u7c73
28.26
18.26
求什么？
绛旓細骞哥鏉鍦ㄨ蹇冨箍鍦轰慨寤轰竴涓渾褰鑺卞潧,鍛ㄩ暱鏄25.12绫炽傚湪鑺卞潧鐨勫懆鍥村張淇簡涓鏉″1绫崇殑灏忚矾,杩欐潯灏忚矾 骞哥鏉戝湪琛楀績骞垮満淇缓涓涓渾褰㈣姳鍧,鍛ㄩ暱鏄25.12绫炽傚湪鑺卞潧鐨勫懆鍥村張淇簡涓鏉″1绫崇殑灏忚矾,杩欐潯灏忚矾鐨勯潰绉槸澶氬皯骞虫柟绫?... 骞哥鏉戝湪琛楀績骞垮満淇缓涓涓渾褰㈣姳鍧,鍛ㄩ暱鏄25.12绫炽傚湪鑺卞潧鐨勫懆鍥村張淇簡涓鏉″1绫崇殑灏...
绛旓細28.26
绛旓細251.2梅3.14梅2=40锛堢背锛40绫=4000鍘樼背4000脳11000=4鍘樼背浣滃浘濡備笅锛
绛旓細37.68 梅3.14 梅2 =6绫 鑺卞潧鍗婂緞 6+2 = 8绫 澶栧渾鍗婂緞 鐜舰闈㈢Н= 锛8脳8 - 6脳6锛壝3.14 = 28 脳3.14 = 87.92 骞虫柟绫
绛旓細澶栧渾鍗婂緞=10+2=12锛堢背锛夊皬璺殑闈㈢Н=3.14脳锛12²-10²锛=3.14脳44=138.16锛堝钩鏂圭背锛
绛旓細閫夋嫨姣斾緥灏1锛10000锛屽垯鍥句腑琛楀績骞垮満涓滆タ闀400梅10000脳100=4鍘樼背锛屽崡鍖楀300梅10000脳100=3鍘樼背锛鍦嗗舰鑺卞潧鐩村緞160梅10000脳100=1.6鍘樼背锛庡彲浣滃浘褰负锛
绛旓細鍗婂渾鐨勫懆闀匡紳鍦嗙殑鍛ㄩ暱鐨勪竴鍗婏紜鐩村緞锛濆崐寰劽3.14锛嬪崐寰劽2锛濆崐寰劽楋紙3.14锛2锛夊崐寰勬槸 165.6梅锛3.14锛2锛夆増32.22锛堢背锛
绛旓細鍏堟眰鍛ㄩ暱 5*2*3.14=31.4锛坢锛31.4\0.5=62.8锛堢泦锛夊洜涓鸿姣忛殧0.5m鏀句竴鐩嗭紝鎵浠ュ皬鏁伴儴鍒嗚鍑忓幓 62.8绾︾瓑浜62鐩
绛旓細鍥炵瓟锛555556
绛旓細鍥炵瓟锛10+2=12 3.14✖️(12✖️12鈥10✖️10)=138.16
