The total cost of flooring a room at the rate of ₹85 per sq. m is ₹5100. If the length of the room is 10m, find its perimeter.
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Step-by-step explanation:
5100/85 = 60
PERIMETER = 2 ( L + B )
= 2 (10 + B)
10 + B = 60/2=30
B = 30-10 = 20
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