Question

PLEASE PLEASE PLEASE HELP!!

Can someone please help me with a step by step of this problem ? I'll seriously appreciate it, and thank you so so so much in advance!!
DON'T ANSWER IF YOU'RE UNSURE!!! I need actual help, please don't just take my points. :c

Answer 1

Excellent! For right triangles, use Pythagoras' theorem. Which sides A and B and the longest Side of C.
A^2+B^2=C^2.
A=5
B=12
5^2+12^2=C^2
25+144=169
sqrt of 169 = 13 (:
it is a 5 12 13 triangle (:
which is a very common right triangle