Find FH. please and thank you :)

What is the square root of 45? (step by step working plz)

The reflexive property of congruence lets you say that ∠pqr ≅

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex