CelluloidPIK CelluloidPIK

11-03-2015
Mathematics

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A 20° sector in a circle has an area of 684 yd^2.

What is the area of the circle?

_________ yd^2

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apologiabiology apologiabiology

11-03-2015

so this is like a pie chart or fractions
20 degreees is x% or x/whole parts
circle=360degrees
20/360=2/36=1/18

so the area represents 1/18 of the circle
684=1/18 of circle
multply both sdies by 18
12312=18/18 circle

the area of the circle=12312 yd^2

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