1. 12.2 Prisms & Cylinders March 27, 2012
Bellwork
Choose 3 different shapes from the back
table.
Find the # of faces, vertices & edges of each.
Name each shape.
HW pg. 806 #4­9, 13­15, 18­20 1

2. 12.2 Prisms & Cylinders March 27, 2012
12.2 Surface Area
Bases
Lateral faces
Lateral edges
Surface Area:
the sum of the areas of all surfaces that enclose the solid
Lateral Area:
the sum of the areas of all lateral faces
Prisms:
perimeter of the base*height of the prism
+
area of the base*2
S.A. Prism = Ph + 2b
HW pg. 806 #4­9, 13­15, 18­20 2

3. 12.2 Prisms & Cylinders March 27, 2012
HW pg. 806 #4­9, 13­15, 18­20 3

4. 12.2 Prisms & Cylinders March 27, 2012
Cylinders:
Cylinder S. A.
= (2πr﴿h + 2﴾πr2)
Circumference of the base*height of the cylinder
+
2*the area of the base
HW pg. 806 #4­9, 13­15, 18­20 4

5. 12.2 Prisms & Cylinders March 27, 2012
a) b)
10
6 12.2
8 6.5
7 7
HW pg. 806 #4­9, 13­15, 18­20 5

6. 12.2 Prisms & Cylinders March 27, 2012
c) d
h
D
D = 15, d = 7, h = 12
HW pg. 806 #4­9, 13­15, 18­20 6

7. 12.2 Prisms & Cylinders March 27, 2012
HW:
12.2 pg. 806
#4-9, 13-15, 18-20
HW pg. 806 #4­9, 13­15, 18­20 7