Ravi wants to fence his rectangular vegetable garden and also plant grass in it. The garden is 12 m long and 8 m wide.

(a) What is the length of fencing required?

(b) If the cost of fencing is ₹ 75 per metre, what will be the total fencing cost?

(c) What is the area of the garden?

(d) If grass costs ₹ 40 per square metre, how much will it cost to plant grass in the entire garden?

Given, length of garden = 12 m and breadth = 8 m.

(a) Length of fencing = perimeter of the rectangle.

$\Rightarrow$ Perimeter = 2 (length + breadth)

= 2 × (12 + 8)

= 2 × 20

= 40 m.

(b) Total fencing cost = length of fencing × cost per metre.

= 40 × 75 = ₹ 3000.

(c) Area of garden = length × breadth.

= 12 × 8 = 96 m².

(d) Cost of planting grass = area × cost per square metre.

= 96 × 40 = ₹ 3840.

Hence, (a) 40 m, (b) ₹ 3000, (c) 96 m², (d) ₹ 3840.