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Unit 6: Sphere Geometry - Surface Area Calculations & Formulas

Learn how to find the surface area of a sphere using radius and formulas. Examples and homework included for practice.

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Unit 6: Sphere Geometry - Surface Area Calculations & Formulas

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  1. Warm up! Find the surface area of the backpack to the nearest inch:

  2. The base is 12 in, but what is the height? (Hint: what is the radius of the circle?) The back has the same area:

  3. The left side has the same area:

  4. The back has the same area:

  5. Spheres Geometry Unit 6, Day 6 Mr. Zampetti

  6. What is a Sphere? • Definition: A 3-dimensional circle. • Examples:

  7. Surface Area Volume Formulas

  8. Example #1 • Calculate the volume of: 15” V = 4/3 pr3 V = 4/3()(15)3 V 14130in3

  9. Example #2 • Calculate the volume of: V = 4/3 pr3 V = 4/3()(3.9)3 V 248.349in3

  10. Example #3 • Calculate the surface area of: S = 4pr2 S =4()(6.1)2 S 467.3576 in2

  11. Homework Work Packet: Spheres

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