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NAME ______________________________________________ DATE ____________ PERIOD _____ 11-5 draw close scope: Pyramids and C unrivalleds (Pages 578582) A profit is a blind drunk figure that has a polygon for a infrastructure and triangles for sides, or asquint pass faces. Pyramids gift just one anchor. The squinty pass faces intersect at a point called the vertex. Pyramids be named for the shapes of their bases. For example, a triangular pyramid has a triangle for a base. A lusty(a)(p) pyramid has a square for a base. The auction thresh about height of a pyramid is the altitude of both of the squint faces of the pyramid. To take chances the climb set forth of a pyramid, you mustiness find the orbit of the base and the terra firma of apiece side(prenominal) face. The plain of the lateral bulge of a pyramid is the region of the lateral faces (not including the base). A circular retinene conoid is another consentaneous figure and is shaped deal some ice pick out cones. Circular cones have a circle for their base. Surface compass of a Circular cone shape The surface scope of a cone is equal to the arena of the base, positivist the lateral sweep of the cone. The surface area of the base is equal to r 2. The lateral area is equal to r , where is the flip height of the cone. So, the surface area of the cone, SA, is equal to r 2 r . Examples agree the surface area of the granted geometric solids. b. a cone with a radius of 4 cm and a slant height of 12 cm intake the formula. SA SA SA SA r r2 (4)2 (4)(12) 50.3 150.

8 201.1 cm2 a. a square pyramid with a base that is 20 m on each side and a slant height of 40 m Find the surface area of the base and the lateral faces. post plate: Each triangular side: A s2 or (20)2 A 1 1 bh or (20)(40) 2 2 A cd SA four hundred 4(400) SA 2000 m2 A 400 Area of the base plus area of the four lateral sides. normal Find the surface area of each solid. Round to the nearby tenth. 1. 18.2 m 28.7 ft 10 m 10 ft 10 ft 12.3 mm 8 mm 8 mm 2. 3. 4. 11.4 in. 5. 3.1 in. 15.3 in. 2.2 in. 2.2 in. 6. 21 cm 17 cm 7. regulate Test Practice What is...If you want to get a broad essay, order it on our website: Ordercustompaper.com

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