Question

The number of surfaces in right circular cylinder is
A.1
B.2
C.3
D.4

Answer 1

Hint: Here, we will use that in a three dimensional figure, faces are the surfaces that make up the outside of a shape, edges are the lines in between the faces and vertices are where two or more edges meet. And then consider it to find the correct one.

Complete step-by-step answer:
We are told that the three dimensional figure is a right circular cylinder.

We know that in a three dimensional figure, faces are the surfaces that make up the outside of a shape, edges are the lines in between the faces and vertices are where two or more edges meet.

We know that a right circular cylinder has two circular surfaces, top and base and one curved lateral surface.

So, the given shape has 3 surfaces in total.
Hence, option C is correct.

Note: Whenever we face such types of problems draw the diagram and count the number of edges, faces and vertices with the help of diagram. Since we are given the diagrams in option, so we didn’t have to draw them separately, find the required values using the same diagrams from the problem. The key concept is to know the meaning of edges, faces and vertices.