Question

The length of a rectangle is three times it's breadth.If the perimeter is 80 m.Find the length of the rectangle

Answer 1

Answer:

let breadth=x m

length=3x m

perimeter of the rectangle=2 (L+B)

80=2 (3x+x)

80=2×4x

8x=80

x=80/8=10

breath=10m

length=3×10=30m