Question

If the radius of a sphere is 12 cm, then find its total surface area . (Take $\pi =3.14)$

• A. $1808.64c{m}^2$
• B. $2808.64c{m}^2$
• C. $1800.64c{m}^2$
• D. $1900c{m}^2$

Answer 1

The correct option is A $1808.64c{m}^2$

Given: Radius of the sphere = 12 cm
Surface area of the sphere = $4\times \pi \times r^2$
= $4\times \pi \times {12}^2$
= $4\times \pi \times 144$
= $576\pi$
= $1808.64c{m}^2$
$\therefore$ Surface area of the sphere is $1808.64c{m}^2$