Question

Estimate the length of one side of a square floor, if the area is 320 square feet. Give the whole number that is closest to the amount.

Answer 1

Recall that the area of a square is equal to its side squared:
\[A_s=s^2\] So, we are given the area as 320 square feet. Plug this in for the area and square root both sides:
\[320 ft^2 = s^2\]
\[s=\sqrt{320}=17.889\approx18\]