Question 1115207: Find the radius of a circle which has a sector area of 9 pi whose central angle is 90 degrees. Found 2 solutions by Alan3354, stanbon:Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! Find the radius of a circle which has a sector area of 9 pi whose central angle is 90 degrees.
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360/90 = 4
Total area = 4 times that of the sector.
You can put this solution on YOUR website! Find the radius of a circle which has a sector area of 9 pi whose central angle is 90 degrees.
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A 90 deg sector has 1/4 the area of the circle.
Total circle area = 4*9pi = 36pi
Equation:
pi*r^2 = 36pi
radius = 6
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Cheers,
Stan H.
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