Answer:

Step-by-step explanation:
<u>Given:-</u>
Radius of the circle = 3.9 in.
<u>To Find:-</u>
The Circumference
<u>Solution:-</u>
We know that the formula of Circumference is :

Note that r equals to <em>radius</em> which is given.
<u>Now,Put the value of radius (r) :-</u>

We know that the value of π is :-

<u>So put the value of π :-</u>

Simplify this:
<u>Multiply 2 and 3.14 :-</u>

<u>Multiply 6.28 and 3.9 :-</u>

Hence,the circumference of the circle would be 24.492 in. .
But We are asked to find the circumference to the nearest Tenth.
So,<u>th</u><u>e</u><u> </u><u>Nearest Tenth of 24.492</u><u> </u><u>in.</u><u> is :-</u>

Hence, the circumference to the nearest Tenth of the circle would be;

We're done!

I hope this helps!
Let me know if you have any questions.
:)