一个圆柱比和它等底等高的圆锥体积大785立方厘米，已知圆柱的底面积是78.5平方厘米，圆柱的高是多少厘米？

Question

如题所述

Answer 1

圆柱的体积是和它等底等高的圆锥体积的3倍、
圆锥的体积=785/（3-1）=785/2=392.5立方厘米、
圆柱的体积=392.5*3=1177.5立方厘米、
圆柱的高=1177.5/78.5=15厘米

Answer 2

圆锥的体积=785/（3-1）=785/2=392.5立方厘米、
圆柱的体积=392.5*3=1177.5立方厘米、
圆柱的高=1177.5/78.5=15厘米

Answer 3

785/（3-1）*3/78.5=15cm

Answer 4

15

Answer 5

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