Question

the sides of a rectangle are in ratio 7:5 and its perimetre is 96cm find the lenght of the rectangle

Answer 1

let x is include in the ratio
length =7x
breadth =5x
perimeter of rectangle =2 ( l +b )
2 × 12x =96
x =4 cm

length =28cm

Answer 2

Given :

• The sides of a rectangle are in ratio 7:5.
• It's perimetre is 96 cm.

To find :

• The lenght of the rectangle =?

Step-by-step explanation :

Let, the length of the rectangle be, 7x

Then, the breadth of the rectangle, 5x.

It is Given that,

Area of Rectangle =7 : 5 cm.

We know that,

Perimeter of the rectangle , 96 cm

As We know that,

Perimeter of the rectangle = 2(length + breadth)

Substituting the values in the above formula, we get,

96 = 2(7x + 5x)

96 = 2 × 12x

.

96 = 24x

x = 96/24

x = 4

Therefore, We got the value off x, 4 cm

Hence,

The length of the rectangle, 7x = 7 × 4 = 28 cm

Then, the breadth of the rectangle, 5x. = 5 × 4 = 20 years.