Question

What is the approximate circumference of a circle with a radius of 30 inches? Use π ≈ 3.14.



A.
62.8 inches


B.
94.2 inches


C.
47.1 inches


D.
188.4 inches

Answer 1

@igreen

Answer 2

what do you think

Answer 3

idk

Answer 4

just try

Answer 5

there is a formula for this...
C = 2 * pi * r

Answer 6

b or d which one

Answer 7

how do i find the answer. so i use the formula then what? what does the formula mean. could you type the steps?

Answer 8

formula for circumference of a circle....
C = 2 * pi * r
C = 2 * 3.14 * 30...now just do the math and multiply everything

Answer 9

d

Answer 10

tht is right

Answer 11

correct...but if you were given the diameter instead of the radius, you would use this formula : C = pi * r

Answer 12

thanks so much

Answer 13

knowing these 2 formulas :
C = 2 * pi * r
C = pi * d
whether your given radius or diameter, you will be able to find the circumference of a circle