Question

Felicity is deep-sea diving with two friends. Todd is exploring a coral reef 6 meters in front of Felicity, and Beth is floating on the surface directly above Felicity. If Beth and Todd are 10 meters apart, how far apart are Felicity and Beth?

Answer 1

Think of the good old 3-4-5 right triangle.

In this case, it would be 6-8-10.