Question

THE CIRCUMFERENCE OF A CIRCLE IS 100 INCHES. FIND THE LENGTH OF A RADIUS. OF A CIRCLE. PIR=3.14

Answer 1

circumference=2.pi.r = so
100=2*3.14*r

Answer 2

15

Answer 3

can you do 2*3.14 ?

Answer 4

aproxiamtely
@nia_maepenix

Answer 5

6.28?

Answer 6

so replace 2*3.14 with 6.28 in your equation. what do you get?

Answer 7

100/6.28?

Answer 8

The choices are 63.7 31.8 31.5 10.0

Answer 9

your equation becomes
100= 6.28*r

as you showed, divide both sides by 6.28, so your equation is
100/6.28 = r

you can use a calculator, or type
100/6.28=
in google's window

r= 15.92

so if that is not one of your choices (roughly) then this is a bogus question
notice that the diameter (2 * r) is bout 31.8
so maybe they want the diameter? or a typo in the answer choices.