Question

The length and breadth of some rectangles are given. Find their perimeter using the formula.

1) $l=3.5m,b=3m$

2) $l=4.2m,b=15cm$

Answer 1

$1)Perimeter=2(l+b)=2(3.5+3)=2(6.5)=13$ sq. m

$2)Perimeter=2(l+b)=2(4.2+15)=2(19.2)=38.4$ sq. m.