Question

If length of a rectangle is 3 times its breadth, find the expressions for its perimeter and area, given that breadth is b cm​

Answer 1

Answer:

l = 3b

perimetre = 2(3bxb) = 2x4b = 8b

area = 3bxb = 4b

Step-by-step explanation:

Answer 2

Step-by-step explanation:

let breadth = b

so, length = 3b

perimeter = 2(l+b)

= 2(3b+b)

= 2× 4b

= 8b