Question

What is the surface area of a sphere with a radius of 16 units?
a. 288 units2
b. 1024 units2
c. 256 units2
d. 1024 units2?

Answer 1

we know that
[surface area of a sphere]=4*pi*r²
for r=16 units
[surface area of a sphere]=4*pi*16²-----> 1024*pi units ²

the answer is
1024*pi units²

Answer 2

Answer:

The surface is $1024\pi units^{2}$.

Step-by-step explanation:

The surface of a sphere is given by the following formula:

$S = 4\pir^{2}$

In which r is the radius of the sphere.

In this problem, we have that:

A radius of 16 units, so $r = 16$.

So

$S = 4\pir^{2} = 4\pi(16)^{2} = 1024\pi units^{2}$

The surface is $1024\pi units^{2}$.