圆柱的底面半径为:12.56÷3.14÷2=2(厘米)
圆柱的侧面积:12.56×5=62.8(平方厘米)
圆柱的表面积:62.8+3.14×22×2
=62.8+25.12
=87.92(平方厘米)
答:圆柱的侧面积是62.8平方厘米,表面积是87.92平方厘米.
故答案为:62.8,87.92.
圆柱的底面周长是12.56cm,高是5cm,它的侧面积是_cm2,表面积是_cm2.
圆柱的底面周长是12.56cm,高是5cm,它的侧面积是______cm2,表面积是______cm2.
数学人气:140 ℃时间:2019-10-06 22:07:00
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