What is the circumference of a circle whose radius is 3 3/4ft?

1foot = 12 inches; 1 yard = 3 feet

Can someone me out here and the tell me the greatest common factor

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