Question

Circumference of circles

Answer 1

Answer: 6.28 feet

Explanation:

The formula for circumference is C= πd Diameter is radius times two. So use a value of π which is usually 3.14 or 3.1416 for practical purposes. Multiply by the diameter. 3.14×2=6.28.

Answer 2

The circumference formula is 2πr and we know r = 1 so the answer is 2π.