Question

Breadth of a rectangle is 'b' cm. Length of the rectangle is 4 times longer than the breadth. What is the perimeter of the rectangle?

Answer 1

Answer:

Let, length of a rectangle is x and breadth is y.

As per condition 1 ie., Length of a rectangle is 4 cm more than its breadth.

The equation is,

x=y+4

∴x−y=4

As per condition 2 i.e., perimeter of the rectangle is 40 cm.

The equation is,

x+x+y+y=40

∴x+y=20

Answer 2

Answer:

Let, length of a rectangle is x and breadth is y.

As per condition 1 ie., Length of a rectangle is 4 cm more than its breadth.

The equation is,

x=y+4

∴x−y=4

As per condition 2 i.e., perimeter of the rectangle is 40 cm.

The equation is,

x+x+y+y=40

∴x+y=20

Step-by-step explanation: