问题
解答题
把一个高3分米的圆柱体的底面分成许多相等的扇形，然后把圆柱体切开，拼成一个与它等底等高的近似长方体，它的表面积比圆柱体的表面积增加了36平方分米，求这个圆柱体的体积。
答案
圆柱的底面半径=36÷2÷3=6（分米）
3.14×62×3=339.12（立方米）
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把一个高3分米的圆柱体的底面分成许多相等的扇形，然后把圆柱体切开，拼成一个与它等底等高的近似长方体，它的表面积比圆柱体的表面积增加了36平方分米，求这个圆柱体的体积。
圆柱的底面半径=36÷2÷3=6（分米）
3.14×62×3=339.12（立方米）
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