Question

Se considera Sfera (O;R) . Daca R= 6cm ,calculati : Arai sferei , Volumul si Aria calota !!! ajutoor !!

Answer 1

A=4πR²=4π6²=4π*36=144π 
A=144π cm²
V=$\frac{4 \pi R^{2} }{3}= \frac{4 \pi 6^{2} }{3}= \frac{4 \pi *36}{3}= \frac{144}{3}=48$
V=48π cm³