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The answer is C or 13 units

How?: by a method called rise over run

the rise is at the y axis and the run is at x axis

*COUNT VERY CAREFULLY*

if you count right you should get 6 as a rise and  7 for run

6+7= 13

B. 10 units

Step-by-step explanation:

Use the pythagorean theorem. (a^2 + b^2 = c^2)

Pretend that PQ is the hypotenuse of a right triangle.

Count the number of units for the supposed legs of the triangle.

The height would be 6 while the base is 8.

6^2 + 8^2 = PQ^2

36 + 64 = PQ^2

100 = PQ^2

PQ = 10

So, the answer is B.

12cm

the answer is d