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

asked Mar 6, 2022 71.8k views

1 vote

12

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

by Binus

6.1k points

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3 votes

Answer:

Explanation:

Use Pythagorean theorem,

base² + altitude² = hypotenuse²

a² + 9² = 12²

a² = 12² - 9²

a² = 144 - 81

a² = 63

a = √63

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