Question

Area of a rectangular lawn is 225m² if its length is 15cm what is its perimeter

Answer 1

area of rectang = L*B          (A)

1 cm=1/100 m

15cm= 15/100m

=0.15

from (A):    

225=0.15*B

B= 225/0.15

1500 m = B=Ans

Answer 2

Area of rectangular lawn =225m

So,

Area of rectangle = length ×breadth

Let the breadth 'b'

b=area/length

b=225/15

b=15m

Perimeter of a rectangle =2 (l+b)

=2 (15+15)

=2 (30)

=60m

It's Perimeter is 60m