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11.4 Vocabulary. Polyhedron Prism, Pyramid, Cylinder, Cone, Sphere lateral face/lateral edge base/base edge vertex altitude cross section solid of revolution axis or revolution.
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11.4 Vocabulary Polyhedron Prism, Pyramid, Cylinder, Cone, Sphere lateral face/lateral edge base/base edge vertex altitude cross section solid of revolution axis or revolution
A polyhedronis formed by four or more polygons that intersect only at their edges. Prisms and pyramids are polyhedrons, but cylinders, cones and spheres are not.
11.4 Supplemental The following materiel is not in section 11.4 of the textbook. Parts of this materiel are included in sections 11.5/6/7. You are responsible for this supplemental information. Vocabulary: Right/Oblique (Prisms-Pyramids-Cones) Surface Area Lateral Surface Area Base Area
Prisms and cylinders have 2 congruent parallel bases. A lateral faceis not a base. The edges of the base are called base edges. A lateral edgeis not an edge of a base. The lateral faces of a right prismare all rectangles. An oblique prismhas at least one nonrectangular lateral face.
An altitude/height of a prism or cylinder is a perpendicular segment joining the planes of the bases. The height of a three-dimensional figure is the length of an altitude. h Surface areais the total area of all faces and curved surfaces of a three-dimensional figure. The lateral areaof a prism is the sum of the areas of the lateral pieces.
Right Prisms and Cylinders: Flat-Tops Rt Cylinder Lateral Surface Area: L = Ph P is the Perimeter of the Base, h is the height Surface Area: S = L + 2B B is Area of the Base
Example 1A: Prisms Find the lateral area and surface area of the right rectangular prism. Round to the nearest tenth, if necessary. Note: Always draw the base to find P and B
Example 2A: Right Cylinder Find the lateral area, and surface area of the right cylinder. Give your answers in terms of .
Find the lateral area and surface area of each figure. Round to the nearest tenth, if necessary. 1. a cube with edge length 10 cm 2. a regular hexagonal prism with height 15 in. and base edge length 8 in. 3. a right cylinder with base area 144 cm2 and a height that is the radius L = 400 cm2 ; S = 600 cm2 L = 720 in2; S 1052.6 in2 L 301.6 cm2; S = 1206.4 cm2
Right Pyramids and Cones: Pointy-Tops l h r Right Cone Lateral Surface Area: L = ½ Pl P is the Perimeter of the Base, l is the Slant Height Surface Area: S = L + B B is Area of the Base
Given a square base pyramid, h = 12, l = 13, s = 10, find L, and S Find L, and S of the cone with r = 8, slant height = 10.