Question

length 12cm and perimeter 38cm and find the breadth

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

Answer 2

2(l+b)=38
2(12+b)=38
b=38-24
=7cm