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# 13.3 Volume of Spheres

13.3 Volume of Spheres. Objectives. Find Volumes of Spheres Solve problems involving Volumes of Spheres. Formula for Volume of a Sphere. Where V is Volume, and r is radius, the formula for the volume of a sphere is…………. V = 4/3 π r³. A Sphere. This is a sphere. r. Example 1.

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## 13.3 Volume of Spheres

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1. 13.3 Volume of Spheres

2. Objectives • Find Volumes of Spheres • Solve problems involving Volumes of Spheres

3. Formula for Volume of a Sphere Where V is Volume, and r is radius, the formula for the volume of a sphere is…………. V = 4/3πr³

4. A Sphere This is a sphere. r

5. Example 1 Find the Volume of this sphere. V = 4/3r³ 24 in. Answer: V ≈ 57,905.8 in³

6. Example 2 Find the Volume of this sphere. C = 36cm Answer: V ≈ 787.9 cm3

7. Example 3 Find the Volume. 18 cm Answer: V ≈ 3035.6 cm3

8. Hemispheres and Their Volumes http://mathworld.wolfram.com/Hemisphere.html The way to calculate the volume of this hemisphere is by using this formula. V = ½(4/3r3) or 2/3r³

9. Example 4 http://mathworld.wolfram.com/Hemisphere.html If your diameter is 4 ft, find the volume of this Hemisphere. V ≈ 16.8 ft³

10. Assignment Pages 704-706 #9-22, 30 & 31, 32-Extra Credit

11. Assignment Pages 704-706 #9-22, 30 & 31 32-Extra Credit

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