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円錐表面積:底面円半径R、円錐高はH、母線はl(側展開図は扇形半径)l=Sqrt(R^2+H^2)ならば側面積=πRl全面積=πR(l+R)円錐体積V=1/3XSは円錐の底面積、hは円錐の高さ、rは円錐の底面半径稜柱体積:稜...
正方形は辺の長さの正方形です キューブは6×の正方形です
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