We are unable to answer this question without being able to see the graph.
I believe this just uses the Pythagorean Theorem. A^2+B^2=C^2. So:
15^2+B^2=25^2. Simplified this is,
225+B^2=625
625-225=400
B^2=400
√ B=<span>√ 400
</span>B=20
Answer:
410.305
Step-by-step explanation:
I forgot how to do standard sorry..