Question

find the length of each side of a square if its area=196cm²

Answer 1

given,
area of a square = 196cm^2
s^2 = 196cm^2
s = 14cm
as all the sides of a square are equal,
the length of each side is 14cm

Answer 2

for a square with side s,
area of a square is s^2
given, square area is 196 cm^2
=> s^2 = 196 cm^2
=> s = 14 cm

Hope this helps you.