Let us now calculate the cost of the precast boundary wall for the below-given land area.

__Given data:__

Length of side AB = CD = 250 ft.

Length of side AD = BC = 174.24 ft.

Height of precast wall = 5 ft.

Area of rectangular land

= [length × breadth]

= [250 ft. × 174.24 ft.]

= 43,560 sq ft. = **1 acre**

[ As 1acre = 43,560 sq ft.]

**Perimeter of land **

= [side AB + side BC + side CD + side DA]

= [250 ft. + 174.24 ft. + 250 ft. + 174.24 ft.]

= **848.48 ft.**

**Length of precast wall **

= [perimeter of land - gate opening]

= [ 848.48 ft. - 15 ft.]

= **833.48 ft.**

**Area of precast compound wall**

= [length of the precast wall × height of wall]

= [ 833.48 ft. × 5 ft.]

= **4167.40 sq ft.**

The market rate for installing precast RCC compound wall varies from INR 80/- to 120/- per sq ft.

Let us consider an average rate of **INR 100/**- per sq ft.

** Cost of installing the precast compound wall**

= [area of precast wall in sq ft. × rate/sq ft.]

= [ 4167.40 sq ft. × 100/-]

=** INR 4,16,740/-**

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