Find the surface area of a sphere whose diameter is equal to 28 cm.

Correct option is D

Given:

Diameter of sphere = 28 cm

Radius r = $$\frac{28}{2}$$​= 14 cm

Formula Used:

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

Solution:

Surface Area of the sphere = $$4 \times \pi \times 14^2$$​​

​$$= 4 \times \pi\times 196$$​​

​​​​$$= 784 \pi \text{cm}^2$$