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In a circle a 180 degree sector has a area 98 pie in square.What is the radius of the circle?
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In a circle a 180 degree sector has a area 98 pie in square.What is the radius of the circle?

User Obed Castillo
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1 Answer

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sector area = central angle / 360 * PI * radius^2
98 PI = (1 / 2) * PI * radius^2
radius^2 = 196
radius = 14


User Daniele
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