Find the cost of painting the four walls of a
room at the rate of Rs per square metre, if its
perimeter is 100 m and height 9 m.
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Answer:
Areaoffourwalls=2(l+b)h
= 100 times 9=100×9
= 900 =900
Cost of painting Cost of painting
= rate times area=rate×area
= Rs \: 9 \times \: 900 =Rs9×900
8100 rs8100rs
Explanation:
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