Question

if the perimeter of a rectangle is 72 cm and it's breadth is 15 cm, then find its length​

Answer 1

Answer:

perimeter of the rectangle=2(length+breadth)

72=2(length+15)

36=(length+15)

length=36-15=21cm

Answer 2

Given:

perimeter = 72cm

breadth = 15cm

perimeter of rectangle = 2(l+b)

72cm = 2(l+15)

72/2cm = l + 15

36cm = l + 15

36-15cm = l

21 cm = l

therefore, length of rectangle = 21cm