Question 404440
 Pythagorean Theorem a^2 + b^2 = c^2
 we know b=6 and c=10 so we have a^2 + 6^2 = 10^2
 a^2= 10^2 - 6^2
 a^2= 100 - 36
 a^2= 64
 a = √64
 a = 8