Question

If the area of a circle is 8pi , what is the length of its diameter?

Answer 1

A=pir^2
8pi=pir^2
r^2=8
r=2sqr2
d=2r=2*2sqr2=4sqr2

Answer 2

area=pi r^2
8pi = pi r^2
8=r^2
r=sqrt8
diameter = r*2 = 2*sqrt8 = 4sqrt2

Answer 3

5.65

Answer 4

yup thats the one!!!...haha thanks....im gonna post some more questions :)

Answer 5

thanks angela and lalay

Answer 6

yw :)