Question

@xGuardians @Hero
One leg in a right triangle is 9 inches long. The other leg is 12 inches long. How long is the hypotenuse?
A. 15 inches
B. 16 inches
C. 18 inches
D. 21 inches <---

The biggest square should have the exact same area as the other two squares put together. 12+9=21

Answer 1

Face palm

Answer 2

hmm no
you need to solve
\[9^2+12^2=h^2\]

Answer 3

9 and 12 are legs, not areas

Answer 4

I got is from here.
http://www.mathsisfun.com/pythagoras.html
I don't see what I did wrong.
@xGuardians

Answer 5

9² + 12² = C² (Hypotenuse)

Answer 6

You get that right?

Answer 7

OK. :)

Answer 8

81 + 144 = C²

Answer 9

You can't just square root them all right away, that's your mistake.

Answer 10

225 = C²
C = 15

Answer 11

You have to add the two together before you can square root, hope this helps!

Answer 12

So... I think I get it...
9^2 = 81
12^2 = 144
81+144=225
15^2 = 225

I'm positive that's right this time. :)
@xGuardians

Answer 13

now you get the square root of 225

Answer 14

Yes so the answer is A. 15 :)

Answer 15

Thanks!