Question

The diameter of a circle is 13 m. Find its circumference in terms of pie

Answer 1

Answer:

The answer is $13\pi$ or 40.84

Step-by-step explanation:

We are given the diamater so

$r=\frac{d}{2}$

$r=\frac{13}{2}$

$r=6.5$

Formula for circumference.

Take note.

C = circumference

r = radius

$C=2\pi r$

You want your answer in terms of Pi.

So we can write another equation.

$2\pi r=\pi x$

x stands for the number in terms of Pi.

Now we can solve for x.

$x=\frac{2\pi r}{\pi }$

Now lets plug in what we know.

$x=\frac{2*\pi*6.5 }{\pi }$

$x=13$