Question

How to take out the length of a rectangle if breadth and perimeter are given ?

Answer 1

we must have realation of length and breadth for example breadth is twice its length

#helpingismypleasure

Answer 2

Step-by-step explanation:

let's assume that the perimeter of the rectangle be 40 cm and the breadth to be5cm and the length be l

Formula of Perimeter of a rectangle=2(l+b)

∴ P=2(l+5)

∴40=2(l+5)

∴40=2l+10

∴40-10=2l

∴30=2l

∴30÷2=l

∴15 cm=l

Ans - The length to the rectangle is 15 cm.