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LESSON 59 Finding Surface Areas and Volumes of Prisms
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REVIEW A prism is a polyhedron formed by two parallel congruent polygonal bases connected by lateral faces that are parallelograms b b ase of a prism is one of the two congruent parallel faces l l ateral face is a face that is not a base
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NEW VOCABULARY Surface Area The surface area of a solid is the total area of all its faces and curved surfaces Lateral Area The lateral area is the sum of areas of the lateral faces of a prism or pyramid, or the surface area, excluding the base(s), of cylinder or cone
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AREA FORMULAS FOR PRISMS Surface AreaLateral Area
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FIND THE LATERAL AND SURFACE AREA, DIMENSIONS ARE IN METERS
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FIND THE SURFACE AREA OF A REGULAR HEXAGONAL PRISM, DIMENSIONS ARE IN FEET
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REMEMBER THE BASE IS A REGULAR HEXAGON
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It would create 6 equilateral triangles We just need to find the area of these 6 triangles, but how will we find the height?
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It would create 6 equilateral triangles We just need to find the area of these 6 triangles, but how will we find the height? 30°-60°-90° What is the height of each triangle?
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FIND THE SURFACE AREA OF A REGULAR HEXAGONAL PRISM, DIMENSIONS ARE IN FEET
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VOLUME OF PRISMS, RIGHT AND OBLIQUE A right prism is a prism whose lateral faces are all rectangles and whose lateral edges are perpendicular to both bases An oblique prism is a prism that has at least one nonrectangular face, which means all of the lateral edges will not be perpendicular to the bases What is another word for height? Altitude
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VOLUME OF PRISM WITH UNKNOWN HEIGHT
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LOOKING FORWARD Finding surface area and volume of prisms will prepare you for: LL esson 62: Finding Surface Areas and Volumes of Cylinder LL esson 70: Finding Surface Areas and Volumes of Pyramids LL esson 77: Finding Surface Areas and Volumes of Cones LL esson 80: Finding Surface Areas and Volumes of Spheres LL esson 85: Cross Sections of Solids LL esson 93: Representing Solids with Orthographic Views LL esson 99: Volume Ratios of Similar Solids
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