Question

Answer Q.15

Answer it fst

Answer 1

Answer:

200 m

Step-by-step explanation:

15.

Let the length and breadth of the rectangular garden be 2x and 3x.

Area of rectangular garden = length * breadth

                                              = 2x * 3x

                                              = 6x².

Given, cost of levelling a rectangular garden at 3.50 per sq.m is 8400.

∴ Area of rectangular garden = 8400/3.5

                                                 = 2400 sq.m.

Now,

⇒ 6x² = 2400

⇒ x² = 400

⇒ x² = (20)²

⇒ x = 20.

Then:

Length = 60 m.

Breadth = 40 m.

Perimeter of garden:

= 2(l + b)

= 2(60 + 40)

= 2(100)

= 200 m.

Therefore, Perimeter of garden = 200 m.

Hope it helps!