Question

the length of a rectangle is 7cm more than its breadth if the perimeter of the rectangle is 90cm find its length and breadth​

Answer 1

Answer:

Step-by-step explanation:

l=7 +b

2(l+b) = 90

2 (7+b+B) = 90

14+4b=90

4b=76

b=19cm

l=7+19

l=26cm

Answer 2

$\boxed{ \huge\mathfrak{solution}}$

Given,

The length of a rectangle is 7cm more than its breadth .

Let ,

•breadth=x

•length=x+7

And perimeter of the rectangle is 90cm

$= > 2(l + b) = 90$

Put the value of length and breadth

$= > 2(x + 7 + x) = 90 \\ = >2 (2x + 7) = 90 \\ = > 4x + 14 = 90 \\ = > 4x = 76 \\ = > x = \frac{76}{4} \\ = > x = 19$

Hence the value of breadth is 19 cm and

length= x+7= 19+7 =26cm.

$\boxed {length = 26cm}$

and

$\boxed{breadth = 19cm}$