 Def: A cylinder is a circular solid with two circular bases. r h L.A. = 2πrh S.A. = 2πrh +2πr 2.

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Presentation transcript:

 Def: A cylinder is a circular solid with two circular bases. r h L.A. = 2πrh S.A. = 2πrh +2πr 2

 Def: A cone is a circular solid with one circular base. l r h L.A. = πrl S.A. = πrl + πr 2

 Def: A sphere is a circular solid with no base S.A. = 4πr 2

 Find the lateral area and surface area. Leave answers exact unless otherwise specified. 7 25

 Find the lateral area and surface area. Leave answers exact unless otherwise specified

 Find the surface area. Leave answers exact unless otherwise specified. 8

 Find the surface area of the solid. Leave answers exact unless otherwise specified

 Find the surface area of the solid. Leave answers exact unless otherwise specified. 3

 The surface area of a sphere is 36π. What is the radius of the sphere?