Please need help thank you

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

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?

Find the value of the combination. 5 c 5