Question

area is 240 and length is 8 What is it's breath and what is its perimeter. टेल मी आंसर फास्ट ​

Answer 1

Suitable Question :

›»› Area of rectangle is 240 cm² and length is 8 cm, what is it's breadth and what is it's perimeter.

Answer :

›»› The breadth of a rectangle is 30 cm.

›»› The perimeter of a rectangle is 76 cm.

Step-by-step explanation :

Given :

• Area of a rectangle = 240 cm².
• Length of a rectangle = 8 cm.

To Find :

• Breadth of a rectangle = ?
• Perimeter of a rectangle = ?

Formula required :

To find the breadth of rectangle we use the formula of area of rectangle.

Formula of area of rectangle to calculate the breadth of rectangle is given by,

→ Area of rectangle = l × b.

Here,

• l is the length of rectangle.
• b is the breadth of rectangle.

Units,

• The unit of length is cm.
• The unit of breadth is cm.

Formula to calculate the perimeter of rectangle is given by,

→ Perimeter of rectangle = 2(l + b).

Here,

• l is the length of rectangle.
• b is the breadth of rectangle.

Units,

• The unit of length is cm.
• The unit of breadth is cm.

Solution :

Let us assume that, the breadth of rectangle is b cm.

As we are given with the length of a rectangle and area of a rectangle then we know the required formula, that is,

→ Area of rectangle = l × b.

By using formula of area of rectangle to calculate the breadth of rectangle and substituting all the given values in the formula, we get :

→ 240 = 8 × b

→ 240 = 8b

→ b = 240/8

→ b = 30.

Hence, the breadth of a rectangle is 30 cm.

Now,

We know that, if we are given with length of a rectangle and breadth of a rectangle then we have required formula, that is,

→ Perimeter of rectangle = 2(l + b).

By using the formula of perimeter of a rectangle and substituting all the given values in the formula, we get :

→ Perimeter of rectangle = 2(8 + 30)

→ Perimeter of rectangle = 2(38)

→ Perimeter of rectangle = 76.

Hence, the perimeter of a rectangle is 76 cm.