1
3 Area of Base
Volume: Pyramids, Cones and Spheres
Volume of a Pyramid or Cone =
h
Volume of a Pyramid1
3 whVolume of a Cone
1
3h r 2
r
Volume: Pyramids, Cones and Spheres
2 cm
5 cm
1.
3
1 2V
1
3h r 2V
3.14 2 5
3
1V 3.14 20
3
1V 62.8 = 20.9 cm3
Volume: Pyramids, Cones and Spheres3. You build a snowman with spheres of snow. How much snow do you need to make the bottom sphere?
4 ft4
3 r 3
3 3
4314. 2 814.3
3
4
100 48
3
.32 5. ft3
V
Pg 549 10 – 9 #1 – 6, 8 – 15 Find the volume of each figure, to the nearest cubic unit.
3
1V
3
1V 9 9 8
9 72
72 = 216 in3
9 in 9 in
8 in1.
V 1
3wh
3
Pg 549 10 – 9 #1 – 6, 8 – 15 Find the volume of each figure, to the nearest cubic unit.
2 yd
6 yd6 yd
3
1 2V
1
3h r 2V
3.14 2 6
3
1V 3.14 24
V 3.14 = 25 yd3
2.
8
Pg 549 10 – 9 #1 – 6, 8 – 15 Find the volume of each figure, to the nearest cubic unit.
40 in
25 in25 in 3
1 2V
1
3h r 2V
3.14 20 25
3
1V 3.14 10,000
3
1V 31,400 = 10,467 in3
3.
Pg 549 10 – 9 #1 – 6, 8 – 15 Find the volume of each figure, to the nearest cubic unit.
4
3 r 3
3 3
4314. 5
12514.33
4
3
1570 523 3in
10 in10 in
4.
Pg 549 10 – 9 #1 – 6, 8 – 15 Find the volume of each figure, to the nearest cubic unit.
4
3 r 3
3 3
4314. 1
114.33
4
3
56.12 4 3yd
2 yd2 yd
5.
Pg 549 10 – 9 #1 – 6, 8 – 15 Find the volume of each figure, to the nearest cubic unit.
4
3 r 3
3
3
4 314. 75.2
8.2014.33
4
3
21.261 87 3m
5.5 m5.5 m
6.
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