Question
The breadth of a rectangle is half of its length. Also, the length of the rectangle is equal to the radius of a circle of area 154 sq. cms. What is the perimeter of rectangle ?
Answer: Option E
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Ï€r2 = 154
=>r2 = 154/Ï€ = 154*7/22 = 7 * 7
r = 7
Length of rectangle = 7 cm
Breadt of rectangle = 3.5 cm
Perimeter of rectangle = 2(7 + 3.5) = 21 cm
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