Question

The total surface area of a sphere of radius 7 cm = cm ${}^2$.

• A. 616
• B. 308
• C. 668
• D. 334

Answer 1

The correct option is A 616

The total surface area of a sphere of radius r = 4$\pi r^2$'
Hence, the total surface area of the sphere = 4$\times$$\frac{22}{7}$$\times$7${}^2$ = 616 cm ${}^2$.