Find the surface area of a sphere whose diameter is equal to 14 cm.

Correct option is D

Given:

Diameter of sphere = 14 cm

Radius r = $$\frac{14}{2}$$​ = 7 cm

Formula Used:

Surface Area of a sphere = $$4\pi r^2$$​​

Solution:

Surface Area of a sphere = $$4 \times \frac{22}{7} \times 7^2$$​​

​$$= 4 \times \frac{22}{7} \times 49 \\ \ \\= 196\pi\, \text{cm}^2$$​​