Patio covers 56 square yards find length of a side of patio to nearest tenth of yard

A square has four equal sides. The area of a square equals

the square of the length of a side

So if the length of a side is s, the area of the square is s^2

We want s^2 = 56

so s = sqrt (56)

you do that on a calculator

s = 7.4833

to nearest tenth, s = 7.5