The document discusses surface area formulas for prisms and cylinders. It defines surface area as the sum of the areas of all surfaces that enclose a solid. For prisms, surface area is calculated as the perimeter of the base multiplied by the height, plus twice the area of the base. For cylinders, surface area is the circumference of the base multiplied by the height, plus twice the area of the circular base. Examples of applying these formulas to prisms and cylinders are also provided.

1. 12.2 Surface Area of Prisms & Cylinders
HW pg. 806 #4­9, 13­15, 18­20 1
April 11, 2014
Bellwork
Choose 3 different shapes from the back
table.
Find the # of faces, vertices & edges of each.
Name each shape.

2. 12.2 Surface Area of Prisms & Cylinders
HW pg. 806 #4­9, 13­15, 18­20 2
April 11, 2014
12.2 Surface Area
Surface Area:
the sum of the areas of all surfaces that enclose the solid
Prisms:
perimeter of the base*height of the prism
+
area of the base*2
S.A. Prism = Ph + 2b
Lateral Area:
the sum of the areas of all lateral faces
Bases
Lateral edges
Lateral faces

3. 12.2 Surface Area of Prisms & Cylinders
HW pg. 806 #4­9, 13­15, 18­20 3
April 11, 2014

4. 12.2 Surface Area of Prisms & Cylinders
HW pg. 806 #4­9, 13­15, 18­20 4
April 11, 2014
Cylinders:
Circumference of the base*height of the cylinder
+
2*the area of the base
Cylinder S. A.
= (2πr)h + 2(πr2
)

5. 12.2 Surface Area of Prisms & Cylinders
HW pg. 806 #4­9, 13­15, 18­20 5
April 11, 2014
6
7
8
a) b)
6.5
10
7
12.2

6. 12.2 Surface Area of Prisms & Cylinders
HW pg. 806 #4­9, 13­15, 18­20 6
April 11, 2014
d
D = 15, d = 7, h = 12
D
h
c)

7. 12.2 Surface Area of Prisms & Cylinders
HW pg. 806 #4­9, 13­15, 18­20 7
April 11, 2014
HW:
12.2 pg. 806
#4-9, 13-15, 18-20