1. A sphere is the set of all points that are equidistant from a given point called the center.
Does a sphere have lateral area?
A =
V =

2. If the diameter of sphere is 12, then what’s the area & volume?

3. What’s the area of a sphere if the volume is ?
What’s the area of a sphere if the volume is ?

4. If the radius of a sphere is halved, the area of the sphere is multiplied by ____ & the volume is multiplied____.

5. 12-4 Spheres
A cylinder can hold three identical tennis balls so that each tennis ball is tangent to the side of the cylinder, to each other, and the top and bottom tennis balls are tangent to the top and bottom of the cylinder. If the diameter of a tennis ball is 7 cm, find the volume of the empty space in the cylinder (assuming the tennis balls are perfect spheres).

6. Betty made two wax candles, one in the shape of a sphere with radius 5cm and another in the shape of a cylinder with radius 5cm and height 6cm. Which candle required more wax?

7. Section 12.4 Written Exercises (p. 500-502) #1-29 (odds)
Homework:
Section 12.4 Written Exercises
(p ) #1-29 (odds)