Question

Please help, image below. Thank you!

Answer 1

Answer:

10 Inches

Hope it helps, have a fantastic day.

Step-by-step explanation:

The Circumference of a circle can be displayed by this formula:

$C = 2\pi r$

$C$ is the circumference, and $r$ is the radius.

So just plug in 31 for $C$, and simplify:

$31 = 2\pi r$

Because the question is asking for the diameter, we only need to divide both sides by pi, as $2r$ is the same thing as diameter.

$9.87 = 2r$ (rounded to the nearest hundredth)

We can even rewrite $2r$ as $d$, which stands for diameter, to make things a little simpler.

$9.87 = d$

Now we just take 9.87, and round it to the nearest whole number, and we get 10. So your answer is 10 Inches.

Hope it helps, have a fantastic day.