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(2×3,14×10×10) + (2×3,14×10×7)
→628 + 439,6
→1067,6 cm²
= phi.r^2 + phi.r^2 + 2.phi.r.t
= 3,14 .10^2 + 3,14 .10^2 + 2 . 3,14 .10.7
= 314+314+ 31,4x7
= 314 +314+439,6
= 1076,7 cmKubik