Question
The area of a rectangle is equal to the area of a circle with circumference equal to 220 meters. What is the length of the rectangle if its breadth is 50 meters?
Answer: Option C
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2Ï€r = 220
=> 2 * 22/7 * r = 220
=> r = (220*7)/(2*22) = 35 metre
Area of circle = πr2
= 22/7 * 35 * 35
= 3850 sq.metre
∴ Area of rectangle
= 3850 sq.metre
∴ Length = 3850/50 = 77 metre
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