Question

Find the exact area of the circle with the given diameter.



d = 12.6 cm









A.



39.69 cm2








B.



158.76 cm2








C.



158.76π cm2








D.



39.69π cm2

Answer 1

is it d

Answer 2

do you know formula of area of a circle ?

Answer 3

for you can calculi it you need to know the radius of circle - yes ?

Answer 4

I don't know how..

Answer 5

diameter = 12,6 cm - yes - given

and you know that the diameter is r+r = 2r

so can you calculi now the length of radius ?

Answer 6

than 2r = 12,6 so than r = ?

Answer 7

divide both sides by 2

Answer 8

Alexis - come please cooperate - this is easy

Answer 9

are you here ?