Question

The area of a rectangle is 630 cm square it's length is 35 cm . Find its perimetre ​

Answer 1

area=Lb

Lb=630,

35*b=630

b=630/35=18

Answer 2

area of rectangle = l×b

630=35×b

630/35=b

18cm = b

and,

perimeter of rectangle = 2 (l+b)

=2 (35+18)

=2×53

=106cm

this is right answer

its mark brailist