The circumference of a circle is C = 2πr. If r = 7, what is C to the nearest hundredth?

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Multiple Choice

The circumference of a circle is C = 2πr. If r = 7, what is C to the nearest hundredth?

Explanation:
Wrap the radius into the circumference formula by multiplying by 2π. With r = 7, the circumference is C = 2πr = 14π. Using π ≈ 3.14159, 14π ≈ 43.9823. Rounding to the nearest hundredth gives 43.98. So the correct result is 43.98. The other numbers don’t match the calculated value when you round 14π to two decimals.

Wrap the radius into the circumference formula by multiplying by 2π. With r = 7, the circumference is C = 2πr = 14π. Using π ≈ 3.14159, 14π ≈ 43.9823. Rounding to the nearest hundredth gives 43.98. So the correct result is 43.98. The other numbers don’t match the calculated value when you round 14π to two decimals.

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