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O sfera are V=288pi cm . Aflati R si aria sferei .

Răspuns :

o sfera are 288 mm  de aceea ca e rotund
V=4πr³/3
288π=4πr³/3
288=4r³/3
r³=288×3/4
r³=216=6³
r=6 cm

A=4πr²=4π×6²=144π cm²