一个深70米的圆坑直经0.53体积是多少
\u4e00\u4e2a\u5706\u5751\u76f4\u5f841\u7c73\uff0c\u6df11.2\u7c73\u4f53\u79ef\u662f\u591a\u5c11\uff1f\u534a\u5f84\uff1d0.5\u7c73
\u4f53\u79ef
0.5x0.5x3.14x1.2
=0.942\u7acb\u65b9\u7c73
\u89e3\uff1a\u5df2\u77e5\u5706\u7684\u76f4\u5f84=50\u7c73\uff0c\u6df1=70\u7c73\uff0c
\u5219\u5706\u7684\u534a\u5f84=50\u00f72=25\u7c73\uff0c
\u9700\u8981\u571f\u91cf
=\u5706\u67f1\u4f53\u79ef
=\u5e95\u9762\u79ef\u00d7\u9ad8
=3.14\u00d7\u5706\u7684\u534a\u5f84\u7684\u5e73\u65b9\u00d7\u6df1
=3.14\u00d725\u7684\u5e73\u65b9\u00d770
=137375\u7acb\u65b9\u7c73
\u7b54\uff1a\u9700\u8981137375\u7acb\u65b9\u7c73\u7684\u571f\u3002
体积是3.14×0.265²×70≈15.44(立方米)
绛旓細鍗婂緞鏄0.53梅2=0.265(绫)浣撶Н鏄3.14脳0.265²脳70鈮15.44(绔嬫柟绫)
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