Question

in a rectangular plot of 170 m length and 140 m breadth there are three roads each 3m width two are parallel to the length and one road 4m width run parallel to the breadth.1.find the total area of the roads. 2.find the total cost of levelling the roads at rs5 per meter square.3.find the area of the remaining portion of the plot

Answer 1

1. Area of all roads= (3×170)+(3×170)+(4×140)
= 1580 Sq.m
2.cost of levelling 1sq. m =Rs 5
cost of 1580sq. m = Rs (1580×5)= Rs 7900
3.Area of remaining plot =Total area of plot - area of roads
= (170×140) - 1580
= 23800 - 1580 = 22220 Sq. m

Answer 2

Answer:

(170*3) + (170*3) +(170*3) + (140*4)

510 + 510 +510 + 560 = 2090

2090- 36 = 2054m

Total area of the road = 2054

Total cost @ 5 per m = 2054 * 5 = 10270

Area of the remaining portion of the plot is : 170* 140 = 23800 -2054 = 21746m