Question

Find the exact circumference of a circle with the given radius.

3/4 inches
C=
6.25ft in
6.57 in.
23.257 in.

Answer 1

`6.5\pi\ in`

Explanation:

we know that

The circumference of a circle is equal to

`C=2\pi r`

we have

`r=3(1)/(4)\ in`

Convert to an improper fraction

`r=3(1)/(4)=(3*4+1)/(4)=(13)/(4)\ in`

substitute

`C=2\pi((13)/(4))`

`C=(13)/(2)\pi=6.5\pi\ in`