Question

A rectangular lawn 70m by 50m has two cross roads each 6m wide running in the middle of it one parallel to the length and other parallel to the breadth. Find the cost of levelling them at rs 5.50per meter square

Answer 1

Area of road =70*50=3500
3500*2=7000 because it has cross road
6*6=36
7000-36=6964
6964*5.50=38302

Answer 2

Area of the road parallel to the length:

Area = Length x Breadth

Area = 70 x 6 = 420 m²

Area of the road parallel to the breath

Area = Length x Breadth

Area = 50 x 6 = 300 m²

Area of the overlapping road:

Area = Length x Breadth

Area = 6 x 6 = 36 m²

Area of the road:

Area = 420 + 300 - 36 = 684m²

Find the cost of levelling:

1 m² = Rs 5.50

684m² = 5.5 x 684 = Rs 3762

Answer: The cost is Rs 3762