Question

Find the cost of flooring verandh at the rate of $12perm^2 if the length and breadth of the verandh are in the ratio 3ratio2 and its perimetre is 49m​

Answer 1

Answer:

$1728.72

Explanation:

Let the ratio be 3x:2x.

Perimeter = 2 (l+b)

=> 49 = 2 (3x+2x)

=> 49 = 2 (5x)

=> 49 = 10x

=> x = 4.9

Hence, length = 3 × 4.9m = 14.7m

Breadth = 2 × 4.9m = 9.8m

Area = l×b = 14.7 × 9.8 m² = 144.06 m²

Cost per m² = $12

Hence, total cost = $12 × 144.06 = $1728.72