hello
tu sais que V cylindre = aire base x haut
= pi x r² x haut
r = 9 km = 90 hm
h = 130 hm
donc V = pi x 90²x130 = 1 053 000 pi hm²
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hello
tu sais que V cylindre = aire base x haut
= pi x r² x haut
r = 9 km = 90 hm
h = 130 hm
donc V = pi x 90²x130 = 1 053 000 pi hm²