Surface area of spheres
Surface area of spheres
What you'll learn
- Identify the radius of a sphere when given the diameter, and vice versa, with 100% accuracy.
- Apply the formula SA = 4πr² to calculate the surface area of a sphere, given its radius or diameter, and express the answer with correct units in at least 8 out of 10 problems.
- Solve real-world problems involving the surface area of spheres, such as calculating the amount of material needed to cover a ball, with at least 75% accuracy.
- Explain how the formula for the surface area of a sphere (SA = 4πr²) relates to the area of a circle (πr²) in a short paragraph, demonstrating understanding of the relationship between these geometric concepts.
Tutorial Preview
How many squares cover this ball?
How many squares cover this ball in all?
How many squares cover this ball?
Sample Practice Questions
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Frequently asked questions
What grade level is "Surface area of spheres"?
Surface area of spheres is a Grade 2 Mathematics lesson on ExcelOS.
What will I learn in Surface area of spheres?
You'll be able to: Identify the radius of a sphere when given the diameter, and vice versa, with 100% accuracy; Apply the formula SA = 4πr² to calculate the surface area of a sphere, given its radius or diameter, and express the answer with….
Is "Surface area of spheres" free to practice?
Yes. You can read the tutorial preview for free, and signing up for a free ExcelOS account unlocks the full tutorial and all practice questions with instant feedback.
How many practice questions are included with Surface area of spheres?
This lesson includes 28 practice questions across multiple difficulty levels, each with instant feedback and explanations.