1. The length and breadth of a wooden board is 12.5cm and 8cm respectively. Find the cost of framing it at the rate of Rs 16.20 per metre.
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Perimeter of wooden board= 2(length+breadth)
= 2(12.5+8) cm
= 2*20.5 cm
= 41 cm
cost of framing 1 metre = Rs. 16.20
cost of framing 100 cm = Rs. 16.20
cost of framing 1 cm = RS. 16.20÷100
cost of framing 41 cm = RS. 16.20÷100*41
= RS. 6.642
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