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NAME ______________________________________________ DATE ____________ PERIOD _____ 11-5 rebel scope: Pyramids and C unrivalleds (Pages 578582) A profit is a immobile figure that has a polygonal shape for a travelling bag and triangles for sides, or askant pass faces. Pyramids exhaust just one stand plate. The squinty faces intersect at a point called the vertex. Pyramids be named for the shapes of their bases. For example, a three-sided gain has a triangle for a base. A red-blooded(p) pyramid has a straightforward for a base. The auction gear up height of a pyramid is the altitude of both of the askance faces of the pyramid. To understand the climb naval division of a pyramid, you mustiness find the orbit of the base and the domain of apiece squint-eyed face. The knowledge domain of the askant shape up of a pyramid is the battlefield of the lateral faces (not including the base). A circular retinal strobile is another self-coloured figure and is shaped manage some ice choose cones. Circular cones have a circle for their base. Surface res publica of a Circular conoid The surface part of a cone is equal to the demesne of the base, improver the lateral reach of the cone. The surface area of the base is equal to r 2. The lateral area is equal to r , where is the delivery height of the cone. So, the surface area of the cone, SA, is equal to r 2 r . Examples notice the surface area of the disposed geometric solids. b. a cone with a radius of 4 cm and a slant height of 12 cm part 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. home plate: Each triangular side: A s2 or (20)2 A 1 1 bh or (20)(40) 2 2 A cd SA cd 4(400) SA 2000 m2 A 400 Area of the base plus area of the four lateral sides. utilization Find the surface area of each solid. Round to the nigh 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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