A circular pond is surrounded by square park of diagonal 90√2 m and diameter of a pond is 20 m less than the side of square park. What is cost of fencing the circular pond if cost of fencing per meter is Rs. 20?
A circular pond is surrounded by square park of diagonal 90√2 m and diameter of a pond is 20 m less than the side of square park. What is cost of fencing the circular pond if cost of fencing per meter is Rs. 20? Correct Answer Rs. 4400
GIVEN :
Side of square = diagonal/ √2
Cost of fencing per meter is Rs. 20
FORMULA USED :
Circumference of circular pond = 2 π r
CALCULATION :
Side of square park = (90√2)/√2 = 90 m
Diameter of circular pond = 90 – 20 = 70 m
Radius of circular pond = 35 m
Circumference of circular pond = 2 π r = 2 × 22/7 × 35 = 220 m
Cost of fencing the circular pond = 220 × 20 = Rs. 4400
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Feb 20, 2025