Question

the length of the rectangle is 6cm and the width is 4cm if the length is increased by 2cm find the area of the new rectangle
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Answer 1

Explanation:

Let the length of the rectangle = l = 6 cm

The width of the rectangle = w = 4 cm

Area of the rectangle = A= l × w

= 6 × 4 = 24 sq cm

If the length is greater by 2

=> new length of rectangle = L = l + 2 = 6+2=8 cm

Area of new rectangle = A = 24

Width of new rectangle = W= ?

New rectangle area = L × W =>

A = L × W

24 = 8 × W = W = 3

Answer

New width of the rectangle is 3 cm to get the area of 24 sq cm

Answer 2

• The area of the new rectangle formed is 32 cm sq.

Given:

The length of a rectangle is 6 cm

The width (i.e. breadth) of the rectangle is 4 cm

So,

To find

The area of the new rectangle formed after increasing the length by 2 cm

According to the question,

The length of the rectangle is increased by 2 cm

So,

The new length of rectangle ( l' ) is = 6 + 2 = 8 cm

There is no change in the breadth

• The formula used to find the area of the rectangle is

= length * breadth units sq.

The area of the rectangle with the new length is

= l' * b

= 8 * 4

= 32 cm sq.

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Rectangle-

• It is quadrilateral which has equal oppsoite sides.
• The four interior angles of the rectangle are 90° each.
• Two diagonals are equal in length.

The formula to find the perimeter of the rectangle is

= 2 * (length + breadth) units.