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参考公式三角函数和差化积公式台体的侧面积公式s=1/2(C+C′)l,其中C、C′分别表示上、下底面周长,l表示斜高或母线长台体的体积公式
Refer to the formula trigonometric function and differential product formula. The formula of the side area of the table body is s=1/2(C+C’)l, where C and C’ represent the perimeter of the upper and lower bottom surfaces, respectively, and l indicates the skew height or the busbar length Body volume formula