Question

Find the surface area of a sphere With radius three using the formula SA equals 4NR squared. Leave answer in terms of en

Answer 1

ANSWER

b. 36π units²

EXPLANAION

As stated in the question, the formula to find the surface area of a sphere of radius r is,

$SA=4\pi r^2$

In this case, the radius is 3 units,

$SA=4\cdot\pi\cdot3^2=\pi\cdot4\cdot9=36\pi\text{ }units^2$

Hence, the surface area of this sphere is 36π square units.