The length of the hypotenuse of a right triangle is 21 units. The length of a leg of
the triangle is 3 units. What is the length of
the other leg of the triangle?

You have a square piece of cardboard that measures 14 inches on each side. to build a box, you cut congruent squares out of each corner of the cardboard. use the picture to find the area of the cardboard you were used to build the box