# Surface Area of Pyramid and Cone

- Author:
- wlin, GeoGebra Materials Team, Rasha Tarek, Anthony OR 柯志明

## Q1. First, let' set the faces=4 and click the net view. What shapes are the net of the pyramid consist of?

## Q2. What is the relationship between the area of the net of pyramid and its surface area?

## Q3. What information do we need to find the area of the base? What information do we need to find the area of the lateral faces?

## Q4. Can you write a formula for the surface area of a sqaure pyramid?

**Now, let's look at the cone.**

## Q5.

What is the net of the cone consist of?

**Then, let's find out how to measure the area of the curved section.**

## Q6.

How can we approximate the area of the curved section, and what shape does the curved section tend to?

## Q7. What information do we need to find the area of the curved section?

## Q8. What is the area of the curved section?

## Q9.

What is the surface area of the cone?