Question

The sides of a rectangle are in the ratio 3:2. If the area is 486 sq m, find the cost of fencing it at ₹40 per metre​

Answer 1

Step-by-step explanation:

answer is rs. 24,400 according to the question

Answer 2

Here the ratio of sides of rectangle is given to be 3:2

Let the length and breadth be 3x and 2x respectively

Area = length × breadth

486 = 3x × 2x

486 = 6x²

x² = 486 / 6

x = 91

Perimeter = 2 ( length + breadth )

= 2 ( 3x + 2x )

= 2 ( 5x )

= 10x

= 10 × 91

= 910 m

cost of fencing is Rs. 40 per meter

so, cost of fencing for 910 m = 910 × 40

= Rs. 36400

Hence, the cost of fencing will be Rs. 36400