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Math Ch. 8 Vocabulary AND Formulas
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Terms in this set (23)
composite solid
an object made up of two or more shapes
cone
a 3-dimesional figure with one circular base connected by a curved surface to a single vertex
cylinder
a 3-dimensional figure with 2 parallel congruent circular bases connected by a curved surface
hemisphere
one of two congruent halves of a sphere
lateral area
the surface area of a 3-dimesional figure excluding the bases
total surface area
sum of the areas of all its surfaces
nets
a two dimensional patter of a 3-dimesional shape
polyhedron
a 3 dimensional figure with faces that are polygons
similar solids
solids that have exactly the same shape but not the same size
sphere
a set of all points in a space that are a given distance (radius) from a given point called the center
volume
the space occupied by a solid measured in cubic units
Area of a Circle
πr²
Lateral Area of a Cylinder
2πrh
Volume of a Cone
1/3πr²h
Area of a Triangle
1/2bh
Surface area of a Cone
πrl+πr²
Area of a Trapezoid
1/2h(b1+b2)
Surface Area of a Cylinder
2πrh+2πr²
Area of a Rectangle
bh or lw
Lateral Area of a Cone
πrl
Area of a Paralellogram
bh
Volume of a Cylinder
πr²h
Volume of a Sphere
4/3πr³
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