The areas of two square fields are respectively 256 and 625 sq. m. find the ratio of their sides

We know that
area of the square=b²> b=√area
where
b is the side length of the square

for the smaller square
area=256 m²
b=√256> b=16 m

for the larger square
area=625 m²
b=√625> b=25 m

the ratio of their sides is 16/25