What is the area of a circle if its diameter is 9 centimeters

Question

Mathematics

Kylee Hahn

21 December, 09:29

What is the area of a circle if its diameter is 9 centimeters

+3

Answers (2)

Know the Answer?

Red Velvet · Answer 1

A=pi·r²

r being radius

if the diameter is 9 you have to divide it by 2 to get r

r=4.5

A=pi (3.14) ·4.5

A≈14.13 (I use the ≈ because pi is irrational and goes on forever but = works too)

So the area is 14.13 units

Reagan Stout · Answer 2

Reagan Stout 21 December, 12:37

0

Hey. The answer is 63.617.