Question

find the lenght of a rectangular playground . whose perimeter is 400m and breadth =50m

Answer 1

2(l+b)=400
2(l+50) =400
2l+100=400
2l=300
l=150
length is 150 cm

Answer 2

heya frnd!

here's ur answer...

given breadth of the rectangular playground=50m

perimeter of the playground=400m

2(l+b)=400m

2(l+50)=400m

l+50=400/2

l+50=200

l=200-50

l=150

hence, length of the rectangular playground is 150m.

verification:-

perimeter=2(l+b)

=2(150+50)

=2×200

=400m

hence verified

hope this helps...

(^^)