What is the circumference of the circle in terms of \pi? a. 900\pi in. b. 90\pi in. c. 60\pi in. d. 30\pi in.

Question

What is the circumference of the circle in terms of
`\pi`?

a. 900
`\pi` in.
b. 90
`\pi` in.
c. 60
`\pi` in.
d. 30
`\pi` in.

Answer 1

`\sf \: r \: = 30 \: in. \\ \sf \: C \: = 2\pi r \\ \\ \sf \: C \: = 2\pi(30) \\ \sf \: C = 2 * 30\pi \\ \sf \: C = \boxed{\underline{ \bf c. \: 60\pi \: in.}}`

Answer 2

`c. \: 60\pi \: in.`

Explanation:

Given,

Radius = 30 in

So,

Circumference

`= 2\pi r`

`= 2 * \pi * 30in.`

`= 60\pi \: in.(ans)`