Practice SURF ACE AREAS AND VOLUMES - 11 | 11. Surface Areas And Volumes | CBSE 9 Mathematics
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11 - SURF ACE AREAS AND VOLUMES

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Find the curved surface area of a cone with a radius of 4 cm and a slant height of 5 cm.

💡 Hint: Use the formula πrl.

Question 2

Easy

Calculate the surface area of a sphere with a radius of 3 cm.

💡 Hint: Remember the formula 4πr².

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the formula for the curved surface area of a cone?

  • πrl
  • πr²
  • 2πr

💡 Hint: Think about how this relates to the radius and the slant height.

Question 2

True or False: The volume of a sphere is equal to (4/3)πr².

  • True
  • False

💡 Hint: Remember what each formula represents!

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A cylindrical tank has a radius of 5 m and height of 10 m. How many hemispherical domes with a radius of 2 m can fit on top of the tank?

💡 Hint: Use V = πr²h for the cylinder and (2/3)πr³ for the hemisphere.

Question 2

If the volume of a conical tent is 1,200 m³ and its radius is 15 m, what is the height of the tent?

💡 Hint: Rearranging the formula will lead you to find the height.

Challenge and get performance evaluation