Question

The length and width of a rectangular field are 500 m and 400 m respectively, within it two
roads of 10 metres width run parallel to both sides. Find the area covered by both the
roads.​

Answer 1

Answer:

the cost of graveling them at ₹ 1.20 per sq meter = Rs. 1560

Step-by-step explanation:

The figure attached with this shows the pictorial representation of the given scenario.

The shaded region shows the roads.

To find the area of roads

It is given that,

A rectangular lawn 80m×60 m has two roads each 10m wide running in the middle of it

Dimension of two roads are 80X10 and 60X10

Area = 80x10 + 60x10 - 10x10 = 800 + 600 - 100 = 1300 square meter

To find the cost for graveling

It is given that,

the cost of graveling them at ₹ 1.20 per sq meter

Therefore total cost = total area x cost per sq meter = 1300x1.20 = RS.1560