Class 6 Maths| Ex # 8.2| Q # 4 to 8| Surface Area and Volume| Punjab Book 2024-25 | Unit 3 New Book

Описание: Class 6 Maths| Ex # 8.2| Question # 4 to 8| Surface Area and Volume | Punjab Book 2024-25 | Unit 3 New Book

In this video, we cover Chapter 8: Surface Area and Volume from Class 6 Mathematics – Punjab Textbook Board (English Medium). This chapter introduces basic concepts of measuring 3D shapes, including surface area, volume, and how to calculate them for cubes, cuboids, and cylinders.

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Exercise – 8.2

1. Identify the altitudes of the following figures:

(i) (figure of triangle with altitude marked)
(ii) (figure of triangle with altitude marked)
(iii) (figure of parallelogram with altitude marked)

2. Calculate the area and perimeter for each of these parallelograms, trapeziums and triangles:

(i) Parallelogram: base = 3 cm, height = 8 cm
(ii) Parallelogram: base = 10 cm, height = 4 cm
(iii) Trapezium: parallel sides = 4 cm, 8 cm, height = 3 cm
(iv) Parallelogram: base = 5 cm, height = 7 cm, side = 3 cm
(v) Triangle: base = 6 cm, height = 4 cm
(vi) Triangle: base = 10 cm, height = 4 cm, side = 5 cm

3. Find the area of each shaded shape:

(i) Trapezium inside a square (dimensions: square side = 8 cm, trapezium top = 4 cm, bottom = 8 cm, height = 4 cm)
(ii) Triangle inside a square (dimensions: base = 8 cm, height = 4 cm)
(iii) Trapezium: top base = 4 cm, bottom base = 10 cm, height = 7 cm

4. The area of a parallelogram is 126 cm² and its perpendicular height is 9 cm. Find its base. Also, calculate its perimeter.

5. The base and area of a parallelogram is 9 cm and 99 cm² respectively. Find its perpendicular height.

6. The parallel sides of a trapezium are 25 cm and 30 cm and its area is 192.5 cm². What is the height of trapezium?

7. A trapezium has a longer base that is 25 cm and the height is 5 cm. The area of trapezium is 200 cm². What is the shorter base of the trapezium?

8. The height of a triangular garden is 55 m and base is 90 m. Find the number of flowers in the garden if 20 flowers are in the area of each square metre.

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🎓 What Will You Learn in This Video?

In this video, you will learn:

✅ What is Surface Area and Volume – simple and clear explanation
✅ Difference between Area, Surface Area, and Volume
✅ Formulas of Cube and Cuboid – easy to remember
✅ How to Find Volume and Surface Area step-by-step
✅ Units of Measurement for area and volume
✅ Solved Examples from textbook and real life
✅ Common Mistakes to Avoid in exams
✅ Concept-based Learning with visuals
✅ How to Apply Formulas in word problems
✅ Practice Questions from Class 6 Punjab Board textbook

📚 Textbook-based explanation | 🔍 Search-friendly terms used | ✍️ All exercises covered

1. What is the formula for surface area of a cube and cuboid?
2. How to calculate volume of a box?
3. What is the unit of volume and surface area?
4. Why do we multiply length × breadth × height for volume?
5. What is the difference between area and volume in math?
6. How to remember formulas of surface area and volume?
7. Which shape has the largest surface area?
8. What are 3D shapes in maths?
9. How to solve surface area and volume word problems?
10. How to find the missing side using volume?
11. What is surface area in real life examples?
12. How is surface area useful in daily life?
13. Volume of liquid vs solid – what’s the difference?
14. How to convert cm³ into litres?
15. Why do we need to learn surface area and volume in Class 6?
16. How to solve class 6 chapter 8 exercise step by step?
17. What is the easiest way to learn surface area and volume formulas?
18. Which unit is used for measuring capacity and volume?
19. How to find surface area from given net of cube?
20. MCQs and short questions from surface area and volume chapter class 6