Question

the perimeter of a rectangle is 38 cm and its length is 12cm find its breath

Answer 1

Perimeter of rectangle=38
2(l+b)=38
2(12+b)=38
24+2b=38
2b=38-24
2b=14
b=14/2
b=7 cm

So breadth is equal to 7cm

Answer 2

hello friend
here is your answer

let consider breadth be x
then length = 12
breadth= x
perimeter of rectangle= 2(l+b)
38cm = 2(12+x)
38=24+2x
38-24=2x
14=2x
14/2=x
7=x
breadth =7cm

hope it would help you
thanks dear