Question

The length of a rectangular field is thrice its breadth. If the cost of cultivating the field at Rs. 367.20 per square meter is Rs. 27,540, then what is the perimeter of the rectangle?

Answer 1

Here is the answer for ur question

Answer 2

The perimeter of the rectangle is 40m.

Given data :

Cultivating cost = ₹ 367.20/m²

Total Cost = ₹27540

Length = 3 × Breadth

Now,

₹367.20 is needed for = 1m²

₹1 is needed for = 1/367.20 m²

₹27540 is needed for = 27540/367.20 = 75 m²

So,the area of the rectangle is = 75 m²

Let,the breadth = x m

So,the length = 3 × x = 3x m

Now,

x × 3x = 75

3x² = 75

x² = 25

x = 5

So, breadth = 5 m

Length = (3×5) = 15 m

Perimeter = {2×(5+15)} m = 40 m (answer)