Option 4 : Rs. 144

**Given:**

Area of the half part of land = 324 m^{2}

Cost of fencing Veer’s Land = Rs. 2/m.

**Concept Used:**

Area of Rectangle = L × B

The perimeter of Rectangle = 2(L + B)

Cost of fencing for Veer’s Land = Rs. 2/m × Perimeter of Veer’s land.

**Calculation:**

Let the length and breadth of Veer’s part be L m and B m respectively

⇒ L × B = 324

For a minimum cost of fencing, the perimeter should be minimum, and it will be possible only

When L = B

⇒ L^{2} = 324

⇒ L = 18 m

The perimeter of Veer’s land = 72 m

Cost of fencing for Veer’s Land = Rs. 2/m × Perimeter of Veer’s land.

⇒ Rs. 2 × 72

Cost of fencing = Rs. 144

**∴**** The Cost of fencing for Veer’s Land is Rs. 144.**