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.

A. 17 ft

B. 18 ft

C. 19 ft 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.

A. 17 ft

B. 18 ft

C. 19 ft

Let us assume the length of a side of the square floor = x feet

Area of the square floor as given in the question = 320 square feet

Then

x^2 = 320

x^2 = (17.89) ^2

Then

x = 17.89

= 18 feet approx

From the above deduction, it can be easily concluded that the correct option among all the options that are given in the question is the second option or option "B".