The area of a rectangle is equal to the area of circle whose radius is 21cm.if the length and the breadth of the rectangle in the ratio of 14:11 ,what is its perimeter
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lb=πr^2
lb=(22/7)x21x21
lb=1386m^2
14y x 11y=1386m^2
154y^2=1386m^2
y^2=1386/154m^2
y^2=9m^2
y=√9
y=3
lb=(22/7)x21x21
lb=1386m^2
14y x 11y=1386m^2
154y^2=1386m^2
y^2=1386/154m^2
y^2=9m^2
y=√9
y=3
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