Question

1. a square has side lengths of 4.02 inches, estimate the area of the square!

Explanation:

Step1: Approximate side - length

Approximate 4.02 to 4 since 4.02 is close to 4 for estimation purposes.

Step2: Calculate area

The area formula of a square is $A = s^2$, where $s$ is the side - length. Substitute $s = 4$ into the formula, so $A=4^2$.
$4^2=16$

Answer:

16 square inches