(1)一个圆柱的侧面积是18.84,底面直径是2厘米,圆柱的体积是( )立方厘米.
(2)把一个圆柱的侧面积展开是一个正方形,已知圆柱的底面半径是10厘米,圆柱的高是( ),体积是( ).
人气:304 ℃ 时间:2019-09-05 09:01:58
解答
(1)一个圆柱的侧面积是18.84,底面直径是2厘米,圆柱的体积是( 9.42)立方厘米. 高是18.84÷(3.14X2)=3厘米,体积是(2÷1)²X3.14X3=9.42立方厘米(2)把一个圆柱的侧面积展开是一个正方形,已知圆柱...
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