A 110m×80m rectangular plot has two crossroads, each 4m wide, running throughits middle, one parallel to the length and the other parallel to the breadth. Find the total expense involved in cementing the roads at ₹15 per sq m and laying grass in the remaining part at ₹1.25 per sq m
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Area of rectangle plot 110x80=8800m2
Area of road=110x4+76x4
= 440+304=744m2
cost of cementing = 744x15=11160
Rs .11160. Ans
Area to lay grass=8800-744 = 8056m2
cost of laying grass=8056x1.25
= Rs.10070. Ans
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