Write 8pr/12p in simplest form

4pr/6p

4r/3

2r/3

2/3

First - Since you have a  in the numerator and denominator, you can cancel them and get:
8r/12

Second - Since both 8 and 12 have common factors, you can find the GCF and divide both by that number.
GCF = 4
8/4=2
12/4=3

2r/3

Let O be the intersection of the vertical line through ZX, and the horizontal line through YW. 

The coordinates of this point are clearly (5, 2) as it is at the same x-coordinate as X and Z, and y-coordinate as Y and W.

So, YZO is a right triangle. By the Pythagorean theorem:

.

Since all sides of a rhombus are equal, then the perimeter is :

                                units.

third choice.