Answer: 3.97000947 × 10^4
Answer:

Step-by-step explanation:






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
The answer is 2.35714285714!
hope this helps!!
39° because a right angle adds up to 90°