Answer: i'm pretty sure the first option is correct. she wrote it down correctly
Answer:
12g
Step-by-step explanation:
The hypotenuse of the right triangle measures 3 units.
<h3>
How to find the hypotenuse?</h3>
Here we know that both legs measure:

If we use the Pythagorean theorem, we will see that the hypotenuse H can be written as:

Then we conclude that the hypotenuse of the right triangle measures 9 units.
If you want to learn more about right triangles:
brainly.com/question/2217700
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The number is 8. 8x6=48, 8x5=40, 48-40=8.