square centimeters of a circle with a radius of 16 centimeters?

Question

we are trying to work a math problem that asks, how many square centimeters are there in a circle with a radius of 16 centimeters?

Answer 1

The area of a cicle has the units of cm², so this is what you are trying to find.

 

So since the equation for area of a circle is:

Area = π × r²                          ,    where r = radius of cicle

 

To find the area of your circle,

 

Area = π × (16 cm)²

Area = π × 256 cm²

Area = 804.248 cm²              (rounded up to 3 decimal places)

Answer 2

.45 square centimeters = 45 square millimeters