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Question
The dimensions of a plot are 200 m × 150 m. A builder builds 3 roads which are 3 m wide along the length on either side and one in the middle. On either side of the middle road he builds houses to sell. How much area did he get for building the houses?
Solution
Given that, dimensions of plot = 200 m × 150 m and width of road = 3 m
∴ Total area available for houses = Area of total plot – Area of 3 roads
= 200 × 150 – 3 × (3 × 200) ......[∵ Area of rectangle = Length × Breadth]
= 30000 – 1800
= 28200 m2
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