Question

The perimeter of a rectangle is 13 cm and its length is
$2 \times \frac{1}{4}$
cm . Find its breadth.
​

Answer 1

Answer:

The perimeter of a rectangle is 13 cm and its breadth is 2 3/4cm

let lenght be l

now 2 \frac{3}{4}2

4

3

=> 11/4 cm

perimeter of rectangle = 2(l+b)

so ,

13 = 2(l+b)

13 = 2(l+11/4)

13 = 2l +11/2

13 - 11/2 = 2l

26-11/2 = 2l

15/2 = 2l

=>l= 15/2*2

=>l = 15/4cm

hope it will help you armi ✌

Answer 2

Step-by-step explanation:

$p = 13 cm\\ p = 2(lb) = 13cm \\ l = 2 \times \frac{1}{4}cm = \frac{1}{2} cm \\ p = 2( \frac{1}{2} \times b) = 13 \\ 1 \times 2b = 13 \\ b = \frac{13}{2} cm$