Surface Area of Pyramids
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Surface Area of Pyramids
What is a pyramid?
Polyhedron with one base and triangular faces that
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meet at a vertex
How do you find Surface Area?
Sum of the areas of all
the surfaces of a 3-D Figure
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Find the Surface Area.
17.5 cm
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7 cm
8 cm
Find the Surface Area.
17.5 cm
7 cm
8 cm
Bottom
Rectangle
8
x 7
56
Surface Area
56
140
+ 122.5
2
318.5 cm
8 cm
Front/Back
Triangles
17.5 cm
17.5 cm
7 cm
7 cm
8 cm
Left/Right
Triangles
Find the surface area of a square pyramid with base
edge of 4 inches and triangle height of 3 inches.
3 in
Base
4
x4
16
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4 in
4 Triangles
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Surface Area
16
+ 24 2
40 in
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Find the surface area.
Be sure to look at the base to see if it is an equilateral or
isosceles triangle (making all or two of the side triangles
Triangles
equivalent!).
Base
(all equal)
6 in
3.5 in
4 in
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reveal
click to
reveal
4 in
4 in
Surface Area
7
+ 36 2
43 in
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reveal
42 Which has a greater Surface Area, a square
pyramid with a base edge of 8 in and a height
of 4 in or a cube with an edge of 5 in?
A
B
Square Pyramid
Cube
43
Find the Surface Area of a triangular pyramid with
base edges of 8 in, base height of 4 in and a slant
height of 10 in.
10 in
8 in
6.9 in
8 in
8 in
44 Find the Surface Area.
11 m
12 m
6.7 m
9m
9m