Question

The length and breadth of a rectangle box is in ratio 2:3. If it’s perimeter is 45cm then the length is

Answer 1

Perimeter of rectangle = 100m

ratio of length is to breadth = 3:2 = 3x : 2x

Perimeter = 2(l+b)

P = 2(3x+2x)

= 6x + 4x = 10x

10x = 100 ; x = 100/10 = 10

l = 3x = 3 × 10 = 30 m

b = 2x = 2 × 10 = 20 m

Area of rectangle = length × breadth ( l×b )

A = 30 × 20 = 600 sq.m

Answer 2

Step-by-step explanation:

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

Permieter of rectangle = 2(l+b)

                          45cm = 2( 3x +2x)

                          45cm =  10 x

                             x      = 4.5 cm

length = 3x = 13.5 cm