Sara-can you help me with this problem

This page lists questions and answers that were posted by visitors named Sara-can you help me with this problem.

Questions

The following questions were asked by visitors named Sara-can you help me with this problem.

Answers

The following answers were posted by visitors named Sara-can you help me with this problem.

I am not getting the correct answer. And what is the significance of the second triangle?
16 years ago