through a rectangular field of length 100 m and breadth 50 m two roads are constructed which are parallel to the sides and cut each other at right angles through the centre of the field. if the width of each road is 4 m find the area covered by the roads and the cost of constructing the roads at ®120 per m²
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Length of the road along the length of the field= 100m
Breadth= 4m
Area of the road= l×b
=100 ×4 =400m^2
Similarly, the area of the road parallel to the breadth of the field= l×b
=50 × 4=200m^2
Area of the common portion= 4×4 =16m^2
1. Area of the two roads
=400+ 200 -16
=584m^2
2. cost of construction of the roads
584×120
=®70080
I hope this helps you
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