The perimeter of a rectangular park is 200 m. If its breadth is 35 m, then find its length. Also, find the cost of growing grass at 12.50 per m2.
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perimeter of a rectangular park = 200m
breadth = 35m
we know that : PERIMETER OF A RECTANGLE = 2 ( l + b )
2 ( 35 + l ) = 200 ( transposing 2 from left to right )
35 + l = 100
l = 100 - 35
l = 65m
area of a rectangle = l × b
65 × 35 = 2275m²
cost of growing grass at Rs 12.5 per m²
=> total cost = 12.5 × 2275
= Rs 28437.5
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