Question

the length of a rectangular field is three times its breath.if the breadth of the rectangle is 3.5m find the perimeter of the rectangle.

Answer 1

let l=3x,b=x
b=3.5,l=3×3.5=10.5
p=2(l+b)
=2(10.5+3.5)
=2×14
=28

Answer 2

L=B×3
3.5×3=10.5=L
perimeter=2(l+b)
2×10.5+3.5=24.5=perimeter