Question

If the cirumference of a circle is equal to the perimeter of a square whose sides are π, what is the radius of the circle?

1

2


4

π

2π

Answer 1

Permeter of a circle=Perimeter of a square
2 pi r = 4L
2 pi r =4 pi

Answer 2

Does it help?

Answer 3

so it's 4?

Answer 4

nope

Answer 5

2π?

Answer 6

nope

Answer 7

its 2

Answer 8

got it?

Answer 9

sure

Answer 10

C = 2PIr but you are told that C = 4PI
therefore:
2PIr = 4PI ........DIVIDE BY 2PI boths sides to get:
r = 2