Answer:
Option C
Step-by-step explanation:
Use the <u>Pythagorean Theorem</u> to find the unknown side.
<h3>We are given that:</h3>
We need to solve for a.
<em>Option C should be the correct answer.</em>
If I assume that p is supposed to be r, then:
r = 12.5
or
r = 25/2 is improper or 12 & 1/2 is proper
I would go with 45,45, 90 because first you can eliminate C and D.
C because it is not an equilateral triangle and D because you can figure it out.
Now you have A and B. A 30, 60 90 Degree Triangle would mean that none of the sides are equal (or the legs don't equal the hypotenuse when you put it in Pythagorean form [a²+b²=c²]). However if you translate the problem to answers that are easier to understand: {(7√3 = 12.124)² + 21² = 587.8944 = 14√3} Then you can see, two angles are equal to each other. So the answer is B.
9.31 is the answer, in the decimal 31 has the greatest value
