# Volume and Surface Area of Cones. 2nd Grade of Secondary School

## Explaining about Volume and Area of Cones. The learning material resources for media taken from New Syllabus Mathematics book (7ed), published by Shinglee.

MathematicsVolumeSurface AreaConesSecondary School

# Volume and Surface Area of Cones. 2nd Grade of Secondary School

Created 3 years ago

Duration 0:17:53
105
Explaining about Volume and Area of Cones. The learning material resources for media taken from New Syllabus Mathematics book (7ed), published by Shinglee.
Slide Content
1. ### Slide 1 - Mathematics

• Volume and Surface Area of Cones
• 2nd grade of Secondary School
• By: I Putu Eka Prana Yoga
2. ### Slide 2 - Calculate the volume and the surface area of cones.

• Solve problems involving the volume and the surface area of composite solids made up of cones.
• Learning Objectives
3. ### Slide 3 - Learning Agenda

• Classroom Discussion
• Types of Cones
• Volume and Surface Area of Cones
• Exercise
4. ### Slide 4 - What are Cones?

• Ice Cream Cone
• Party Hat
• Can you identify some common features of these cones?
• What do you notice about the slanted faces of these cones?
• What do you notice about the bases of these cones?
5. ### Slide 5 - Definition of Cone

• A cone is solid in which the base is bounded by simple closed curve and the curved surface tapers into a appoint called apex, which is opposite the base.
• Apex
• Height
• Slant Height
6. ### Slide 6 - Types of Cones

• Circular Base
• Elliptical Base
• Circular Cone
• Elliptical Cone
7. ### Slide 7 - Types of Cones

• Circular Base
• Elliptical Base
• Circular Cone
• Elliptical Cone
• Circular Cone

• 3 cm
• 16 cm
• 3.3 cm
• 15 cm
• 3.7 cm
• 14 cm
• 4 cm
• 13 cm
• A
• B
• C
• D
10. ### Slide 10 - Volume of Cone

• Volume of Cone =
• =
11. ### Slide 11 - A Cone has a circular base of radius 12 cm and height of 30 cm. Find the volume of the cone.

• Example 1
• 30 cm
• 12 cm
• Volume of Cone =

• 14 cm
• 6 cm

• Example 2
• 30 cm
• 12 cm

• 15 cm
• 5 cm

17. ### Slide 17 - Surface Area of Cones

• Total Surface Area of Cone =
18. ### Slide 18 - A cone has a circular base of radius 6 cm and a slant height of 10 cm. Find the total surface area of the cone!

• Example 3
• 10 cm
• 6 cm
• Total surface area of the cone =

• 7 cm
• 4 cm
20. ### Slide 20 - A cone has a circular base of radius 3 m and a height of 4 m. Find the curved surface area of the cone!

• Example 4
• 4 m
• 3 m
• The curved surface area of the cone =

• 14 cm
• 7 cm

27. ### Slide 27

• 25 mm
• Circumference of Base= 132 mm
• Quiz 5