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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the surface area of a sphere with radius 4 cm?
π‘ Hint: Use the formula 4ΟrΒ².
Question 2
Easy
Define a sphere in your own words.
π‘ Hint: Think about the shape of a basketball.
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 surface area of a sphere?
- 2Οr
- 2ΟrΒ²
- 4ΟrΒ²
π‘ Hint: Think about the number of times you need to multiply the radius squared.
Question 2
True or False: A hemisphere has two curved faces.
- True
- False
π‘ Hint: Visualize a half-sphere.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A hollow spherical shell has an outer radius of 7 cm and an inner radius of 5 cm. Calculate the surface area of the material used.
π‘ Hint: Use the formula for the surface area of a sphere and consider both the inner and outer surfaces.
Question 2
A sphere is inscribed in a cube. If the cube has a side length of 6 cm, calculate the surface area of the sphere.
π‘ Hint: Consider how the sphere fits perfectly inside the cube.
Challenge and get performance evaluation