1. 12.6 Surface Area & Volume of Spheres April 10, 2013
Bellwork
Get a cone and a pyramid from the back table.
Find the volume of each.
Put bellwork in homework bin.
Apr 8­8:05 AM
HW pg. 842 #4­22 evens 1

2. 12.6 Surface Area & Volume of Spheres April 10, 2013
12‐6 Surface Area of a Sphere
Objecves:
1. You will be able to apply the volume formula for a sphere.
2. You will be able to apply 3D visual thinking skills.
3. You will be able to develop reading comprehension & problem‐solving skills.
SA = 4πr2
Find the surface area of a sphere with a diameter of 14.2 cm
Mar 24­2:09 PM
HW pg. 842 #4­22 evens 2

3. 12.6 Surface Area & Volume of Spheres April 10, 2013
Find the surface area of the hemisphere at the le
if the diameter is 12 in.
Mar 24­2:09 PM
HW pg. 842 #4­22 evens 3

4. 12.6 Surface Area & Volume of Spheres April 10, 2013
Volume of a Sphere
4
V= π r3
3
Find the volume of the sphere below:
18 in
Mar 28­10:20 AM
HW pg. 842 #4­22 evens 4

5. 12.6 Surface Area & Volume of Spheres April 10, 2013
What is the volume of a basketball with a
circumference of 12π?
What is the volume of the snow cone?
3 in
7 in
Mar 28­11:45 AM
HW pg. 842 #4­22 evens 5

6. 12.6 Surface Area & Volume of Spheres April 10, 2013
How much clay would be
needed to create the bowl at the right if
the bowl is .5 in thick and the distance
from the center of the bowl to the edge is
in 10 in?
10
Mar 28­11:59 AM
HW pg. 842 #4­22 evens 6

7. 12.6 Surface Area & Volume of Spheres April 10, 2013
A beach ball has a diameter of 20 inches. If the blue section
were removed from the beach ball, what would the remaining
volume be? (assume all sections are equal in size)
Mar 28­12:05 PM
HW pg. 842 #4­22 evens 7

8. 12.6 Surface Area & Volume of Spheres April 10, 2013
Homework:
12.6 pg. 842 #4­22 evens
Feb 24­10:14 AM
HW pg. 842 #4­22 evens 8