Asquare has 14.4 in what is the length of each of the sides

3.6 in

When finding the perimeter, you divide the perimeter by the # of sides on the shape. In this case you would divide 14.4 by 4 because it's a square. Hope this helps.

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

4.

step-by-step explanation:

it have the same area.brainliest