rectangular field, if cost of ploughing the field in 5/m
10. A door of length 5 m and breadth 2 m is fitted in a wall. The length of the wall is 6.5 m and breadth 4.5 m. Find
the cost of white-washing the wall, if the rate of white-washing the wall is 50 per m².
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Step-by-step explanation:
Area of the wall= l×b
= 6.5m×4.5m
= 29.35m²
Area of the door= l×b
= 5m×2m
= 10m²
Area of the wall excluding the door= 29.35m²-10m²
= 19.35m²
therefore, the cost of white-washing the wall= $50/m²
= 19.35×50
= $967.5
Hope it helps you
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