Keddy wanted to paint borders along the perimeter of a wall. It cost $13 per metre to paint borders of the wall. The area of the wall was 210 m² and the length was 15 m. How much did he have to pay for painting the borders of the wall?
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4
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Answer:
area = 210 m^2
l×b=210
15×b= 210
b= 210/15
b= 14 metre
perimeter of the Wall= 2(l+b)
= 2(15+14)
= 58 metre
cost = $13 per metre
total cost= $13×58
754$
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