Up Up and Away Jim Smith. Hot Air Balloon Surface area Volume.

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Presentation transcript:

Up Up and Away Jim Smith

Hot Air Balloon Surface area Volume

A Hot Air Balloon is a composite of a hemisphere and a truncated cone

Hemisphere Surface Area Surface Area Formula SA = 2πr 2

Cone Surface Area Surface Area Formula SA = πrl

Approximate Surface Area of Hot Air Balloon Total surface area of hot air balloon = surface area of hemisphere + surface area of cone – vertex tip of cone

Surface Area Summary ____ square feet of ___________is needed to make a hot air balloon.

Hemisphere Volume Volume Formula V = ⅔πr 3

Cone Volume Volume Formula V = ⅓πr 2 h

Approximate Volume of Hot Air Balloon Total volume of hot air balloon = surface area of hemisphere + surface area of cone – vertex tip of cone