Question

if the breadth of rectangle in one-third of it's length a perimeter is 80cm, find the length and breadth of rectangle​

Answer 1

Answer:

Step-by-step explanation:

Let the length of rectangle be x

Breadth =1/3 of length

Breadth=1/3×x

Perimeter of rectangle=2(length +breadth)=80

=2(x+1/3×x)=80

LCM of 1 and 3 is 3

2(x×3/1×3+1x/3)=80

2(3x/3+1x/3)=80

2(3x+1x/3)=80

2(4x/3)=80

8x/3=80

8x=80×3

8x=240

x=240÷8

x=30

Therefore, length =x=30cm

Breadth=1/3×x=1/3×30=10cm