Question

What is the length of the rectangle whose breath is 10cm and perimeter 60 cm :

Answer 1

Width = 10 cm

Perimeter = 60 cm

=> 2(Length +Width) = 60

=> Length + 10 = 30

=> Length = 20 cm

Answer 2

perimeter of rectangle is 2(l+b)
breadth is 10cm
perimeter is 60cm
p=2 (10+l)
60=20+2l
2l=60-20
2l=40
l=20