Question

Big Ben (the clocktower) in London has a circumference of 72.22 feet and an area of 415.27 feet^2. What is the diameter AND radius of Big Ben? Use 3.14 for pi. Do not round your answer.

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Answer 1

Diameter = 23 Radius = 11.5

Explanation:

Divide the circumference by π, or 3.14 for an estimation. The result is the circle's diameter.

72.22 ÷ 3.24 = 23

diameter = 23

Divide the diameter by 2.

23 ÷ 2 = 11.5

There you go, you found the circle's radius