Geometry: An Interactive Journey to Mastery

Lesson 24: Introduction to Scale

 A regular hexagonal cone is divided into two parts by a plane parallel to

the base of the cone halfway along the height of the cone, as shown in

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The volume of the top portion of the cone is 20 cubic feet.

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 A cross section of a circular cone is parallel to the base of the

cone at a distance of 4 cm from the base and 16 cm from the

cone point, as shown in )LJXUH.

This creates two similar cones.

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the large cone?

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circles shown?

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height 4 cm?

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 Through their skin, earthworms absorb oxygen, which is needed for the function of the cells within

their bodies.

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material? Does the amount of oxygen it absorbs in a given period of time depend on its surface area or

on its volume?

Figure 24.5

16 cm

4 cm

Figure 24.6