Question

if the breadth of rectangle in one third of its length and perimeter is 80 cm find length and breadth of rectangle​

Answer 1

length = 30 cm

Breadth = 10 cm

Explanation:

Length = x cm

Breadth = (1/3)x

Perimeter = 80 cm

2(length + breadth) = 80

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

`2*((3)/(3)x+(1)/(3)x) = 80\\\\2*((4)/(3)x) = 80\\\\(8)/(3)x = 80\\\\x = 80*(3)/(8)\\\\x = 10*3`

x = 30cm

length = 30 cm

breadth =
`(1)/(3)*30=10` cm