Question

Find the surface area of a sphere with radius of 40cm

Answer 1

Answer:

6400π cm^2

Step-by-step explanation:

Surface area of sphere = 4πr^2

Answer 2

Given

Radius of the sphere = 40 cm

SOMETHING YOU NEED TO KNOW

Surface area of a sphere = 4πr²

Volume of a sphere = 4/3 πr³

$\implies 4 * \pi * 40 * 40\\\implies 4 * 3.14 * 40 * 40 \\\implies 20096 \ cm^{2}$

$\boxed{\boxed{\bold{Therefore, \ the \ surface \ area \ of \ the \ sphere \ is \ 20096 \ cm^{2}}}}}$

NOTE

• The formula for the lateral surface area of a sphere is the same as the formula for the surface area of a sphere, since it is a curved structure with no definite base.