the area of a quarter circle is 38.5 centimetre square find the radius of circle
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area of quarter circle = π r²/4 = 38.5 cm²
⇒ r² = (38.5×4)/π
⇒r² = 49
⇒r = 7 cm
⇒ r² = (38.5×4)/π
⇒r² = 49
⇒r = 7 cm
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Area of quarter circle=πr^2/4=38.5cm^2
r^2=38.5×4/π=49
r=7
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