Formula to find the Aea rectangular:

AB = CD = Length of the rectangular.

AD = BC = Width of the rectangular.

So, Area of the rectangular is :

Area = Length * Width

In the above diagram -

AB = CD =

and AD = BC =

Total width cover by path = 5 + 5 =

Now, subtract the path width from both width and height of the plot so -

PQ = RS = 70 - 10= 60

PS = QR = 30 - 10 = 20

Now area of path : Area of ABCD - Area of PQRS

= AB * AD - PQ * PS

= 30 * 70 - 20 * 60

= 2100 - 1200

= 900m

Cost of gravelling the path at

900m

= Rs 630

Copyright © 2018, All Right Reserved Lakshya Education