Question

What's the exact length of BC?
A) 8√3
B) 5√6
C) 12
D) √306

Answer 1

The answer is (15)²= (9)²+(BC)²

225=81+(BC)²

BC=√144

BC=12

They also have a pdf for it

copy and paste this pdf it should help you mepanswers.pdfExplanation: