Question

The perimeter of rectangle is 40 cm and the breadth is 8 cm. Find its length.

Answer 1

length = 12 cm

Explanation:

The perimeter (P) of a rectangle is calculated as

P = 2l + 2b ( l is the length and b the breadth )

let x be the length , then

2x + 2(8) = 40

2x + 16 = 40 ( subtract 16 from both sides )

2x = 24 ( divide both sides by 2 )

x = 12

That is the length is 12 cm

Answer 2

divide 40 by 8cm. it's pretty self explanatory

Explanation:

`40cm / 8cm`

divided 8 on both sides.

divide 40 from 8 and you're left with 5 cm. the length is 5.