Question

I need these answers ASAP would be very grateful for these if you would like to help me out I would appreciate it and give a good amount of points!

Answer 1

5. c = 8pi cm

6. c = 18pi ft

7. c = 8.6pi in

8. c = 11/2pi m

Explanation:

The circumference of a circle can be easily found using the formula: c =
`\pi`d, where the diameter is d.

Now you just plug your numbers into the formula!

5. c = pi x d

c = 8pi cm

6. This one gives you the radius instead of the diameter. All you need to do now is to double the radius to find the diameter.

9 ft x 2 = 18 ft

Now, it follows the formula.

c = pi x d

c = 18pi ft

7. c = pi x d

c = 8.6pi in

8. c = pi x d

c = pi x 2(2 3/4m) - Note that this is a mixed fraction. To be able to multiply it, you need to convert it to an improper fraction.

c = pi x 2(11/4)

c = pi x 11/2

c = 11/2pi m

:)