how many vertices, edges and faces does a cylinder have? How do you find the perimeter and area of the base?

Thank you.

1 answer

This actually depends on you definition of faces and edges.
If face is not necessarily flat, and edge is where two faces meet, then A cylinder has 3 faces, 2 edges and 0 vertices.

Area of the base of cylinder: A cylinder has base in shape of circle, and there are two circles - at the top and the bottom. Thus,
A,base = 2πr^2

Perimeter of cylinder: I'm not sure about this one. I rarely see problems that needs to solve for 'perimeter' of cylinder, since cylinder is a 3D shape. Usually it's volume or surface area (SA). If surface area,
SA,cylinder = 2πr^2 + 2πrh

hope this still helps~ `u`