What is the circumference of a round pizza with an area of 36 square inches?

To make it easier, aprox pi=3.14

area=pir^2

36=area

36=pir^2

divide both sides by pi

36/pi=r^2

36/3.14=r^2

11.464=r^2

square root both sides

3.39=r

circumfernce=2pir

r=3.39

circumfrence=2pi times 3.39

circumference=pi times 6.78

circumference=3.14 times 6.78

circumfernce=21.29

answer is

circumference=21.29 in

You would do c=2pir and do 2*pi*36 for your answer