Can u please help me with this?

Question

What is the diameter of a circle whos circumfrence is equal to 20pi?

i need this for school tomorrow and i dont know what to do. Please show me how u arrived to this answer. Thankyou.

Answer 1

the formula for the circumference of a circle is:

C = 2pi*r  (where r is the radius)

if the circumference is 20pi then

20pi = 2pi*r we can divide both sides by pi

20 = 2r

10 = r

if the radius is 10 then the diameter is twice that so:

d = 20

Answer 2

well, Circumference=pi X Diameter.

so the diameter is 20.

i hope i helped you

Sage and Wise gave you the radius.

Answer 3

First of all you should find out what 20 pi is so 20 x 3.14 is 62.8

You divide it by pi 3.14 so it would just come back to 20.

The answer should be 20