Question

Estimate the length of one side of a square floor if the area is 820 square feet. Give the whole number that is closest to the amount.

Answer 1

area of a square = side^2

so if the area is 820..to get the side then just take the square root

what is \(\sqrt{820}?\)

Answer 2

we know 30^2 = 900 so the answer must be less than 30 (it is a square floor)
therefore answer is 29

Answer 3

could be 28..that's less than 30 too