• # question_answer Find the surface area of a sphere of radius 6.3 cm. A)  600 $c{{m}^{2}}$                B)  700 $c{{m}^{2}}$         C)  550 $c{{m}^{2}}$                            D)  498.96 $c{{m}^{2}}$

(d): surface area $4\pi {{r}^{2}}$ $4\times \frac{22}{7}\times \left( 6.3 \right)\times \left( 6.3 \right)$ $=88\times 0.9\times 6.3$ $=88\times 5.67$ = 498.98.