Find the surface area of a sphere whose diameter is equal to 30 cm

Correct option is A

Given:

Diameter of sphere d = 30cm

Radius r =$$\frac{30}{2}$$​ = 15cm

Formula Used:

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

Solution:

Surface Area of sphere = $$4 \times \pi \times (15)^2$$​​

​$$= 4 \times \pi \times 225 = 900\pi$$​​

Thus, the surface area of the sphere is 900$$\pi$$​ cm²