Question

perimeter=70cm, breath=15cm find the length

Answer 1

the formula is
length=perimeter/bradth
legth=70/15
length=14/3

Answer 2

Perimeter of Rectangle:2 (L+B)
2 (L+15)=70
2L+30=70
2L=70-30
2L=40
Lenght =40/2=20

Answere is 20
By Rectangle

Lenght=P/B
L=70/15
L=14/3
L=4.6