All of them are except for number 1
[8,4.5] i think that is right
Answer: 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.
The scale factor is 2
x = 11.5
14/7 = 2
23/x = 2
x = 11.5
