11.2 - Surface Area of a Sphere
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Practice Questions
Test your understanding with targeted questions
What is the surface area of a sphere with radius 4 cm?
💡 Hint: Use the formula 4πr².
Define a sphere in your own words.
💡 Hint: Think about the shape of a basketball.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula for the surface area of a sphere?
💡 Hint: Think about the number of times you need to multiply the radius squared.
True or False: A hemisphere has two curved faces.
💡 Hint: Visualize a half-sphere.
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Challenge Problems
Push your limits with advanced challenges
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.
💡 Hint: Use the formula for the surface area of a sphere and consider both the inner and outer surfaces.
A sphere is inscribed in a cube. If the cube has a side length of 6 cm, calculate the surface area of the sphere.
💡 Hint: Consider how the sphere fits perfectly inside the cube.
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