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Question 10
A circle has a radius of 9 cm
When written in terms of pi, how many times greater is the area than the circumference?
А
The area is the same as the circumference
B
The area is double the circumference,
С
The area is 4.5 times greater than the circumference
D
The area is 9 times greater than the circumference

Respuesta :

piradii2
If its radius is 9 cm, it’s circumference would be two times radius times pi equal to 18 pi. Also its area is pi R squared which is equal to 81 pi.

Circumference = 18 pi
Area = 81 pi

Area is 4.5 times greater than the circumference. The answer is C.

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