Question

The length and breadth of a rectangular plot are in ratio 4:3. If the area of the plot is 1728m find its perimeter​

Answer 1

Answer:

168

Step-by-step explanation:

area of rectangle = l*b = 4x* 3x

4x * 3x = 1728

12x^2 = 1728

x^2 = 1728/12

x^2 = 144

x = sqrt(144) = 12

now length = 48 and breadth = 36

perimeter of rectangle = 2(l+b)

= 2( 48 + 36)

= 168

Answer 2

Step-by-step explanation:

Let the length and breadth be 4x and 3x

A/Q

Area of plot = 4x x 3x

1728m^2 = 12x^2

1728/12 = x^2

144 = x^2

√144 = x

x = 12 m

Hence, Length = 4x12= 48m

Breadth = 3x12 = 36m

Perimeter of plot = 2(l+b)

= 2(48+36)

= 2x84

= 168

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