Question

The sides of rectangular park are in the ratio of 4:3. If its area 1728m2 then find its perimeter

Answer 1

Answer:

Ratio in the side of a rectangle = 4 : 3

Area = 1728 m2

Let length = 4x, and breadth = 3x

∴ Area = l × b

1728 = 4x × 3x

⇒ 12x2 = 1728

⇒ x2 = 1728/12

⇒ x2 = 144 = (12)2

∴ x = 12

∴ Length = 4x = 4 × 12 = 48 m

Breadth = 3x = 3 × 12 = 36 m

(i) Now, perimeter = 2(l + b)

= 2 (48 + 36) m

= 2 × 84 = 168 m

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

4x×3x=1728m^2

x^2= 1728/12= 144 x=12

2(4x+3x)=2×7x=14×12=168m