12.1 prisms. prisms are specific kinds of _____________ the word polyhedra is the plural form of...
TRANSCRIPT
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12.1
Prisms
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Prisms are specific kinds of _____________
The word polyhedra is the plural form of polyhedron.
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A polygon is a 2-dimensional shape.
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______________________
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Lets talk about specifics of a Prism.
Prism: ____________________________________
__________________________________________
Altitude: __________________________________
__________________________________________
Lateral Faces: _____________________________
Lateral Edges: _____________________________
__________________________________________
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Presto! A triangular prism!
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Presto! A Rectangular Prism!
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So what did we learn about Naming?
_______________________________
______________
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Formulas:
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The only unique name that you have to remember is the
“cube.”
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A rectangular ______________________________________
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A cube has a volume of 8cm cubed.
Find the length of each edge and the TA.
s
s
s
s
s
s
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Find TA and Volume:
H=12
w=6
l=5
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Find TA and Volume:
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Find the volume of a rectangular solid with length of 10, width 3 and height of 12.
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Find the TA and Volume of a cube with an edge of 5a.
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Class work:
1.A right triangular prism has base edges of 5,12,13 and Volume of 450. Find the height of the prism.
2.The base of a Triangular prism is an isosceles triangle with legs of 3 cm. The height of the prism is 10 cm. Find the LA, TA and V.
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12.2
Pyramids
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Pyramid: ________________________________
Altitude: _________________________________
________________________________________
Lateral Faces: ___________________________
Bases: __________________________________
Slant Height: _____________________________
________________________________________
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Presto! A triangular pyramid!
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Presto! A square pyramid!
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Formulas:
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A regular triangular Pyramid has slant height of 9, and base perimeter of 12. Find LA, B, TA.
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A square pyramid has a base edge of 6 and a lateral edge of 5. Fill in missing values.
r a
½ s
base
LEa
lh
h
r
LE LEl
½ s
3
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Find LA, BA, TA, and V of the last Problem:
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a h BE LE LA TA V
3 4
5 13
l
Regular Triangular Pyramid
Solve both Problems:
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12.3
Cylinders and Cones
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Cylinders:
Cylinder: ______________________________
height / altitude: ___________________
Radius: ___________
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Lateral Area = ___________________
_______________________________
Total Area = ____________________
_______________________________
Volume = _______________________
_______________________________
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Cones:
Cone: ________________________________
height / altitude: ___________________
Slant height: _________
Radius: ______________
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Lateral Area = __________________
______________________________
Total Area = ___________________
______________________________
Volume = _____________________
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=7
r =5
Find:
B =
LA=
TA=
V=
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=5
r =12
Find:
B =
LA=
TA=
V=
l
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A cone with a radius of 6 and height of 12 cm is filled to capacity with Cherry Coke. Find the minimum height of a cylinder with a radius of 4 cm that will hold the same amount of liquid.
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Class work:r h LA TA V
5 10
3
12 192
r h l LA TA V
5 12
8 15
2 6 2
7
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12.4
Spheres
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Sphere: ________________________
________________________________
________________________________
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Complete the Chart:
d r A V
12
7
64
3
12
r
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If the surface area of a sphere is 16 pie find the diameter and the volume.
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Find the area of the circle formed when a plane passes 9 cm from the center of a sphere with a radius of 15.
15
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Mr. Trem made 2 wax candles, one in the shape of a sphere with radius of 5 and one in the shape of a cylinder with a radius 5 and height of 6. Which candle required more wax?