SURFACE AREA OF A CUBE
Hello! Are you ready to carry out learning activities at this meeting? In this meeting we will learn about "Surface Area of a Cube". Students are allowed to open a book of teaching materials as a reference source.
Indicators of Competence Achievement :
- Understanding the surface area of a cube
- Pray before studying.
- Form groups with 3-4 students in each group.
- Discuss the answers to the problems with a group of friends.
- Ask the teacher if you have difficulty.
- Present the results of your discussion in front of the class in each section.
ACTIVITY 1
Look at the shape below!
1. The shape above called by?
ACTIVITY 2
When the cube is opened, it will form a net like the one below.
After observing the applet above, answer the following questions!
2. What are the sides/faces of the cube?
3. How many edges does the cube have? mention it!
4. How many vertices does the cube have? mention it!
5. How many sides/faces does the cube have? mention it!
6. How do you find the total area of the sides of the cube?
CONCLUSION
Based on the steps you did above, then you can find out the formula for calculating the surface area of a cube.
If the length of the side of the cube is s, what is the surface area of the cube?