Pyramids Cones artbymath com fguilbert Pyramid is a

Pyramids & Cones artbymath. com fguilbert

Pyramid is a 3 D figure wit wi a base that is a polygon. fguilbert

A regular pyramid has a b which is regular. All trian are congruent and isosce. fguilbert

base fguilbert

lateral faces fguilbert

lateral faces fguilbert

lateral faces fguilbert

lateral faces fguilbert

Vertex fguilbert

Height h fguilbert

Slant height is on a lateral face l s is side of th square s fguilbert

Volume - 1/3 B h area Base 4 height 4 fguilbert

Volume - 1/3 B h 1/3 (4)(4) 5 5 m 4 m 4 m 1 /3 (80) V= 26. 6 fguilbert 3 m

Surface area o a pyramid is the sum of the area of the base + areas of the lateral faces. h s fguilbert

You are finding the surface area of the net for the pyra h 5. 4 4 m 4 m fguilbert

Need l for area lateral fa Pythagorean Th 5 l 4 2 4 fguilbert

2 2 l 4 + = 2 4 + 25 = l 2 29 = l √ 29 = √l 2 5. 4 = l 5 2 l 5 s 2 4 fguilbert 2

area base (4)(4) = 16 area lateral faces h 5. 4 4 m 16 4 m fguilbert

area lateral faces each triangle A 1/2 = (4)(5. 4) = 10. 8 h 5. 4 4 m 10. 8 16 10. 8 4 m fguilbert 10. 8

Surface Area pyramid. SA = 5. 4 4 m 4 m - square B + LA side of area base square fguilbert slant heigh

SA =area base+ area lateral fac = 16 + 2(4)(5. 4) h 5. 4 4 m = 43. 2 10. 8 16 10. 8 4 m fguilbert

Volume of a cone V = 1/3 B h area base πr h r fguilbert 2 height

Cone h SA = B + LA l area base slant 2 πr r fguilbert height

Find Volume & S. A. V = 1/3 B h 2 = 1/3 π r h 2 =1/3 π (3) (4) 5 m = 1/3 π (9)(4) 4 m = 1/3 (36) π 3 = 12 π fguilbert

First find l 2+ π3 5 9π+ 4 π 3(5) 15π 24π 3 fguilbert

Teamwork - "Individuals play the game, but teams win championships" fguilbert allposters. com