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A rectangular plot 200 m x 150 m has three3 m wide roads along the length of the ploton either side and one in the middle. On eitherside of the middle road there are shops.(a) Find the area covered by the shops.(b) Also, find the cost of reconstructing theroads at the rate of 2225 per m2. |
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Answer» Length of plot,a= 200Breadth of pot,x= 150Total area of plot = a *x= 200 * 150 = 30000m2Now Length of single road , l = length of plot = 200Breadth of single road , b = 3 (a)Area covered by 3 roads = 3 * l * b = 1800 m2Now Area covered by shops = Area covered by plot - Area covered by 3 roads = 30000 - 1800 = 28200 m2 (b)Now , rate of constructing roads = Rs. 225 / m2Thus total cost of constructing 3 roads = 225 * Area covered by 3 |
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