Question

the area of a square roof is 6400 sq m. find its breadth

Answer 1

area of square=side×side
6400=side×side
√6400=side
side is 80 m
now length and breadth are equal in a square, so breadth =80 m

Answer 2

Hey...!!!

Area = 6400 sq m
So,
X * X = 6400
X square = 6400
X = 6400 under root
X = 80 m

So, its side = 80 m

Hope it helps...!!!