Question

@bibby Help me with finding the missing lengths

Answer 1

after a^2+b^2=c^2

12^2+15^2= c^2

144+225=

Answer 2

what do i do?

Answer 3

\[\huge c^2= 144 + 225 = 369\]

how do you get c alone?

Answer 4

Idk i feel confused and am i supposed to square root anything? cuz last year in 9th grade no but this year i think my teacher did square root something in there....

Answer 5

you are.

Remember that square roots are the opposite of squares (and powers in general)
\[\huge \sqrt{x^2} = x\]
here's a more visual way of seeing it: