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Surface Area . Pyramids, Cones and Sphere’s. Review Prior Knowledge. Surface Area , Lateral Area , radius of a circle, the base of a three dimensional object . New Vocabulary.
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Surface Area Pyramids, Cones and Sphere’s
Review Prior Knowledge • Surface Area, • Lateral Area, • radius of a circle, • the base of a three dimensional object •
New Vocabulary • Only one today… Slant Height: the height of a face, used to find the area of a lateral face in an object such as a pyramid
“Think back to when we found the surface are of Prisms and Cylinders. We will be doing the same type of activities today but we will be adding in three new shapes.”
Pyramids • Formula: L.A. =1/2 pl S.A. = L.A. + B • Web Clip PHSchool.com Web Code: bje-0775Click “Go”, Chapt 10, Lesson 6, Finding surface areas of pyramids using a formula
Cones • Formula: L.A. = rl S.A. = L.A. + B • Web Clip PHSchool.com Web Code: bje-0775Click “Go”, Chapt 10, Lesson 6,Finding surface areas of cones using a formula
Sphere • Formula: S.A. = 4 r2 • Web Clip PHSchool.com Web Code: bje-0775Click “Go”, Chapt 10, Lesson 6,Finding surface areas of spheres using a formula
Homefun!! • Pg. 537-538, Problems 7-23 • Challenge 24-26!!