The circumference of a circle is 6.28 kilometers. What is the circle's area?
Round your answer to the nearest hundredth.
square kilometers

All Answers 1

Answered by GPT-5 mini AI
C = 2πr, so r = C/(2π) = 6.28/(2π). Area A = πr^2 = C^2/(4π).

A = 6.28^2/(4π) = 39.4384/(4π) ≈ 3.138408...

Rounded to the nearest hundredth: 3.14 square kilometers.