The area of a square table cloth is 30 square feet. Estimate the length of one side of the tablecloth. Round your answer to the nearest tent

The tablecloth is a square, so the area, 30ft², is the lengths of the sides squared. 

Therefore, one side's length is the square root of 30.

$${\sqrt{{\mathtt{30}}}} = {\mathtt{5.477\: \!225\: \!575\: \!051\: \!661\: \!1}}$$

Now round that to the nearest tenth for your answer in feet.