Question

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A sumo wrestling ring is circular and has a circumference of 4.6pi meters
What is the area A of the sumo wrestling ring in square meters?
Give your answer in terms of \piπpi.

Answer 1

5.29π m²

Explanation:

C = 2πr = 4.6π ( divide both sides by 2π )

r =
`(4.6\pi )/(2\pi )` = 2.3, thus

A = πr² = π × 2.3² = 5.29π m²