Question

if two rectangles with 6cm lenght and 3cm breadth are joined together along their length thrn find the perimeter of the new shape

Answer 1

4( breadth) + 2( length) AS it is joined along the length so two sides would get hidden

4(3) +2(6)
12 + 12
24

Answer 2

new length = 12 cm
new breadth= 3 cm
hence
perimeter=2(l+b)
=2(12+3) cm
=30 cm