Question

Can someone please help me calculate the unknown side x for the triangle below?
(In comments)

Answer 1

Use the pythagorean theorem. The two legs are 3 and 6, so a = 3 and b = 6. The longest side is unknown. It is x. Since c is the longest side, this means c = x


a^2 + b^2 = c^2
3^2 + 6^2 = x^2
9 + 36 = x^2
...
...
...
x = ???

Answer 2

27?

Answer 3

9+36 is 27, yes, so

x^2 = 27
x = ???

Answer 4

hint: try to undo the squaring

Answer 5

= 3sqrt(3), -3sqrt(3) ?

Answer 6

I'm not very good at this

Answer 7

3sqrt(3) is the only practical answer because x is a length. Lengths can't be negative

Answer 8

Oh ok, so the 3sprt(3) is the answer since it cant be negative? Thank you so much!