Question

The length of a rectangle is twice its breadth. If its perimeter is 60 cm, find the length and the breadth of the rectangle.

Answer 1

Answer:

L=10CM,B=5CM

Step-by-step explanation:

WE KNOW THAT PERIMETER OF A TRIANGLE

2(L+B)

GIVEN THAT 2B=L

SUBSTITUTE

2(L+2L)

2(3L)

6L

PERIMETER IS GIVEN AS 60

SO,6L=60

L=10CM

B=L/2=10/2=5CM

Answer 2

Answer:

Breadth = x = 10 cm

Length = 2x = 20 cm

Step-by-step explanation:

Perimeter = 2 × (Length + Breadth)

60 cm = 2 × (2x+x)

60 ÷ 2 = 3x

30 = 3x

x = 30÷3

x = 10

Breadth = x = 10 cm

Length = 2x = 20 cm