Question

the area of a rectangular field is 4500 square metre if its length and breadth are in the 9:5,then its perimeter is
a)90m
b)150m
c)280m
d)360m

Answer 1

area of rectangle =l×b
so we area as 4500 and ratio of length and breadth as 9/5
so take 9x as length and 5x as breadth
so u will get 45x=4500
-> u will get x^2 as 100 so x=10
so length will be x×9=90
and breadth x×5=50
perimeter of rectangle = 2(l+b)=2(140)=280

i hope u understood
plz mark it as brainliest