If a pizza has a diameter of 15 inches, what is the circumference of the pizza?

47.12 inches

Step-by-step explanation:

Remember to divide the diameter by two to get the radius so you can solve for the circumference.

So dived the diameter by two 15÷2= 7.5

Then C=2πr=2·π·7.5≈47.12389

So C≈47.12

To check our work Simply divide the circumference by π and you will have the length of the diameter.

47.12389÷π

= 15 inches which is our diameter.

Hope this helps

arc length = radius * x ( in radians)

6 * pi = 18 * x

divide by 18 on each side

6 pi / 18 = x

pi/3 = x

the angle is pi / 3 radians

or   60 degrees