Question

Q] The length of a of a rectangle is 4cm more than Its breadth. The perimeter of the rectangle is 40 cm find the length and breadth of the rectangle.
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Answer 1

Answer:

length = 12 and breadth = 8

Step-by-step explanation:

Let the breadth = x

And

Length = x+4

We know,

Perimeter of rectangle = 2(l+b)

= 2(x+4+x)

= 2(2x+4)

= 4x+8

Given,

Perimeter of rectangle = 40cm

So,

4x+8 = 40cm

4x = 40cm-8

4x = 32cm

x = 32cm/8

x = 8cm

So,

Breadth of rectangle = 8cm

Length of rectangle = x+4

= 8cm+4

= 12cm