Question

12

Solve for a.
✓ [?]
9
a =
Enter the number that
goes beneath the
radical symbol
a

Answer 1

63

Explanation:

Use Pythagorean theorem,

base² + altitude² = hypotenuse²

a² + 9² = 12²

a² = 12² - 9²

a² = 144 - 81

a² = 63

a = √63