Answer:
Step-by-step explanation:
Supplementary angles means that the angle sum of the two angles will equal 180 degrees :)
The answer will be a because they are similar and by law the ratio can be cubed to find ratio of volume
We can use the Pythagorean theorum
a^2+b^2=c^2
c^2 is the length of the longest side squared
so
6^2 + b^2 = 10^2
36+ b^2 = 100
-36 -36
b^2 = 64
b = 8
b is the same thing as your "x", so x = 8
