Question 150994: A circle has a circumference of 27 inches. Approximate the radius of the circle to two decimals places. Answer by tweevy(2) (Show Source):
You can put this solution on YOUR website! Circumference is the distance around a circle. The radius is the distance from the circle to the center of the circle. The diameter is the distance from one end of the circle to the other, through the center.
We're given:
circumference = 27
The formula for circumference is:
Circumference = pi * diameter
Solving for diameter:
27 = pi * diameter
8.60 = diameter
The radius is half the diameter so:
radius = 8.60/2 = 4.30 inches
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