Multiple choice question II — task. Mathematics State Board, Class 10.

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In a hollow cylinder, the sum of the external and internal radii is 14

$cm$ and the width is 4

$cm$ . If its height is 20

$cm$ , then the volume of the material in it is:

$5600 \pi$ $cm^3$
$3600 \pi$ $cm^3$
$56 \pi$ $cm^3$
$1120 \pi$ $cm^3$

$1$

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