Скачать или смотреть Class 9 Maths - Chapter 11: Surface Area and Volume | Exercise 11.1 Q4, Q5

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class 9th maths solution
class 9th maths chapter 11 Q4 Q5
ex 11.1 class 9 q4 q5
chapter 11 surface area and volume

Welcome to our Class 9 Maths series! In this video, we’ll be solving Questions 4, 5, and 6 from Exercise 11.1 (Surface Area and Volume) from Chapter 11 of the NCERT textbook.

📝 Chapter Overview: Chapter 11 focuses on the Surface Area and Volume of different 3D shapes like cubes, cuboids, spheres, cylinders, and cones. These concepts are critical for understanding real-world applications of geometry.

📌 Topics Covered in This Video:

Q4: Calculate the surface area of a solid shape.
Q5: Solving for the volume of a given 3D object.
Q6: Applying the formula for volume and surface area to solve complex problems.
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🖋 NCERT Chapter: Surface Area and Volume (Chapter 11)
🖋 Exercise: 11.1
🖋 Questions Solved: Q4, Q5, Q6
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Q4 A conical tent is 10 m high and the radius of its base is 24 m. Find
(i) slant height of the tent.
(ii) cost of the canvas required to make the tent, if the cost of 1 m2
canvas is ` 70.

Q5 What length of tarpaulin 3 m wide will be required to make conical tent of height 8 m and base radius 6 m? Assume that the extra length of material that will be required for stitching margins and wastage in cutting is approximately 20 cm (Use π = 3.14).