KiaraGrassmyer134 KiaraGrassmyer134

27-03-2015
Mathematics

Answered

A 20° sector in a circle has an area of 684 yd2.

What is the area of the circle?

_________ yd2

Answer :

27-03-2015

Set up a proportion:

We know that a circle equals 360 degrees, 20 degrees is equal to 684 yards, so we want to know the area of 360 degrees:

20/684 = 360/x

Cross multiply:

20x = 246240

Divide 20 to both sides:

x = 12312

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