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底面周長是12.56米,高6米,算得側面積為:12.56×6=75.36平方米, 底面半徑為:12.56÷3.14÷2=2米, 上下底面積為:2×2×3.14×2=25.12平方米 表面積為:25.12+75.36=100.48平方米 謝謝採納!
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