Volume of Pyramids and Cones

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6-7
Volume of Pyramids and Cones
Warm Up
Problem of the Day
Lesson Presentation
Pre-Algebra
2
A pyramid is named for the shape of its base. The
base is a polygon, and all of the other faces are
triangles. A cone has a circular base. The height
of a pyramid or cone is measured from the highest
point to the base along a perpendicular line.
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(No Transcript)
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Find the volume of the figure.
A.
V 28 cm3
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B.
Find the volume of the figure.
B ?(32) 9? in2
Use 3.14 for ?.
V 30? ? 94.2 in3
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C.
Find the volume of the figure.
B 14 6 84 m2
V 280 m3
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Find the volume of the figure.
A.
7 in.
5 in.
7 in.
V ? 40.8 in3
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Find the volume of the figure.
B ?(32) 9? m2
B.
7 m
3 m
Use 3.14 for ?.
V 21? ? 65.9 m3
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Find the volume of the figure.
B 4 4 16 ft2
C.
8 ft
4 ft
4 ft
V ? 42.7 ft3
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The Pyramid of Kukulcán in Mexico is a square
pyramid. Its height is 24 m and its base has 55 m
sides. Find the volume of the pyramid.
B 552 3025 m2
V 24,200 m3
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Find the missing measurement to the nearest
tenth. Use 3.14 for p.
B ?(32) 9? in2
cone radius 3 cm height ?
cm volume 37.7 cm3
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Find the missing measurement to the nearest
tenth. Use 3.14 for p.
cylinder radius ? cm height 2 cm volume
75.36 cm3
B p(r2) r2p in2
V Bh
75.36 r2p 2
75.36 6.28r2
12 r2
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Homework

• Pg 314
• 1 11, 17 21, 27 - 31