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In a circle, a 270degrees sector has area 75pi inches squared. What is the radius of the circle? The radius of the circle is___in.
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In a circle, a 270degrees sector has area 75pi inches squared. What is the radius of the circle? The radius of the circle is___in.
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Feb 2, 2019
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In a circle, a 270degrees sector has area 75pi inches squared. What is the radius of the circle?
The radius of the circle is___in.
Mathematics
middle-school
Jeremy Fiel
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Jeremy Fiel
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a 270 degree of sector = 0.75 of its area
area = π r²
so,
0.75 π r² = 75 π
r² = (75 π)/( 0.75 π) = 100
r = +√100 = 10
so
The radius of the circle is 10 in
Jonny White
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Feb 8, 2019
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Jonny White
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