Question

length of a rectangle is three time its breadth. if perimeter of the rectangle is 120 cm. find its length and breadth​

Answer 1

Answer:

let breadth be x then length equal to 3x. (A)

given Perimeter of rectangle=120cm. (1)

we know that the perimeter of a rectangle is 2(length +breadth )=120cm. (from 1)

2(3x+x)=120. (from A)

4x=120/2

x=60/4

x=15cm=breadth

length=3multiply15=45cm