The answer would be 54, because A= PQ over 2 = 9 x 12 over 2 = 54
Answer:
The length of the hypotenuse is 
Step-by-step explanation:
we know that
In a right triangle
Applying the Pythagoras Theorem

where
c is the hypotenuse
a,b are the legs of the right triangle
substitute the values




Simplify

The correct answer is 32 degrees
The kid would need to wash 20 cars because if you divide 231 by 12 is 19.25 and you cant wash a quarter of a car, so you wash 20 and youll have a little money left (or at least he will)