Question

a rectangle has a peri meter of 20 CM if the measure of its side are whole number of cm find the five possible pairs of values of for the length and breadth​

Answer 1

Let the breadth of the rectangle be xcm

Then it's length=x+5cm

Perimeter=2(length+breadth)

⇒70=2(x+(x+5))

⇒70/2=2x+5

=2x+5

⇒2x+5=35

⇒2x=35−5=30

⇒x= 30/2

=15cm

Breadth=x=15cm and length=x+5=15+5=20cm