一个圆柱的侧面积是188.4dm2,底面半径是2dm.它的高是多少?
人气:484 ℃ 时间:2019-10-09 02:37:03
解答
188.4÷(2×3.14×2)
=188.4÷12.56
=15(分米)
答:它的高是15分米.
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