Find a primitive Pythagorean triple (a, b c) where c=b +49.

B

Step-by-step explanation:

v: l•w•h÷2.

v: 20•6•8 ÷2

v: 960÷2

v: 480

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180