A manhole cover has a circumference of 6.28 feet. What is the manholes radius

Answer 1

METHOD 1: Radius of a Circle

A. First method is to use formula to find Radius of a Circle. ∏ is pie. ∏= 3.14

circumference c

Radius of a Circle Formula: radius = 2 ∏. or r = 2∏

Circumference divided by 2 ∏

GIVEN: Circumference (c) equals 6.28 feet (ft).

r = 6.28 feet

Step 1 : 2 (3.14)

Step 2: r = 6.28 ft

6.28 ft

ANSWER: r = 1. The radius of the manhole is 1 foot.