Question

A square has a side of 6.25 feet. What is the area in square feet? Round to the correct significant digits.

Answer 1

\[(6.25)^2 = 39.0625; number of sig figs is 3 from original data, so \it becomes 39.1\]

Answer 2

\[(6.25)^2 = 39.0625\]

Answer 3

But there are three significant figures from the original data; so the answer rounds to 39.1