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Sagot :

Bonsoir,

Volume pavé droit= x(2x)(2x+4)= 2x²(2x+4)= 4x³+8x²

Volume prisme= [ 2x(4x)(x+2) ]/2= [ 8x² (x+2) ]/ 2= (8x³+16x²)/2= 4x³+8x²

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