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Stift.gif   Task

A sphere's surface is being decreased by 36%. How much will its volume and "circumference" change (in %)?

(sphere's circumference = circumference of the biggest intersecting circle)

The circumference decreases by

bitte warten

The volume decreases by

bitte warten

Information icon.svg Note

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See also: Using the Formel-Applet

Information icon.svg Solution

Decrease of circumference:   20%    (Select the red area to see the solution)

Decrease of volume:   48,8%    (Select the red area to see the solution)