20.) The area of a circle is given by the equation A = nr2. If the radius of a circle is equal to 6 centimeters, which of the following is closes to the area of the circle? (Use it = 3.14.)

113.04
18.84
36
28.26

please provide explanation

113.04 cm^2

Step-by-step explanation:

The area of a circle is

A = pi r^2

We know the radius is 6 cm

A = 3.14 * 6^2

A = 3.14 * 36

A =113.04

c-4 is the final answer! : )

256π units²   (answer b)

step-by-step explanation:

the formula for the surface area of a sphere of radius r

is             a = 4πr²

and so, if r = 8 units, then the surface area is:

a = 4π(8 units)² = 256π units²   (answer b)