Question

the perimeter of a rectangular sheet is 70 cm if it is breadth is 15 cm find the length​

Answer 1

Answer:

perimeter of a rectangular sheet is 70 = 2(l+b)

70 = 2(l+15)

l+ 15 = 35

l = 20

thus the length = 20cm

Answer 2

Formula to find perimeter of rectangle

=2(l+b)

So,

70=2(x+15)

70=2x+30

2x=70-30

2x=40

x=40/2

x=20 cm