Question

The radius of a circle is 4.5 in. Find the circumference to the nearest tenth

Answer 1

Answer: The Circumference is 9

Step-by-step explanation:

To find the circumference, need this formula:

$c=2\pi r$

-Place the measurement of the radius onto that equation:

$c=2\pi 4.5$

Then, you solve:

$c=2\pi 4.5$

$c=2$ × $\pi$ × $(4.5)$

$c=9$ × $\pi$

$28.27$

-Round up to the nearest tenth

$28.3$

Answer 2

The circumference is 9. Hope this helps :)