Answer:
Add 3. Double that. Subtract 4. Cut that in half. Subtract your original number. Your result is 1!
Step-by-step explanation:
I'm guessing, Hope its right.
8
Use the Pythagorean theorem.
a^2 + 6^2 = 10^2
a^2 + 36 = 100
a^2 = 64
a = 8
