Question

In a right triangle ABC, the legs are AB = 5 and BC = 12, and in the right triangle DEF, the hypotenuse is DE = 10, and EF = 8. Which is DF + AC?
Answer

19

15

13

12

Answer 1

19

Answer 2

\[|AC|=\sqrt{5^{2}+12^{2}}\]
\[|DF|=\sqrt{10^{2}-8^{2}}\]
calculate & find your value
OK?