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你面周长是18.84分米高20分米，求圆柱的表面积和体积

2025-03-14 20:50:41

推荐回答（1个）

回答1：

底面周长是18.84分米高20分米，求圆柱的表面积和体积

解：
圆柱的底面半径：18.84÷(2×3.14)=3
圆柱的底面面积：3×3×3.14=28.26
侧面积：18.84×20=376.8
它的表面积= 圆柱的底面的面积×2 +侧面积=433.32
体积=底面积×高=28.26×2=56.52

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