What else would you need to measure the area of something

The simplest (and most commonly used) area calculations are for squares and rectangles. To find the area of a rectangle, multiply its height by its width. For a square you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area.

i think is 3 and 6. this took me 10 min to think.hope to and hope that my answer is brainliest.(follow me )