Question

find curved surface area of hemisphere with radius 10.5m.​

Answer 1

Answer :

$\sf \large \pink{curved \: surface \: area \: of \: hemisphere = 2 \pi {r}^{2} } \\ \\ \sf \: radius \: = 10.5m \\ \\ \sf = 2 \times \frac{22}{7} \times 10.5 \times 10.5 \\ \\ \sf = 2 \times \frac{22}{ \cancel {{7}}^{1} } \times \cancel{ {10.5}}^{1.5} \times 10.5 \\ \\ \sf = 44 \: \times 15.75 \\ \\ \sf = 693 {m}^{2}$