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)`