# Find the

Find the volume of a quadrangle prism high 2dm whose base is a square with a side 15cm.

Correct result:

V =  4.5 dm3

#### Solution:

$a=15 \ cm \rightarrow dm=15 / 10 \ dm=1.5 \ dm \ \\ c=2 \ \text{dm} \ \\ V=a^2 \cdot \ c=1.5^2 \cdot \ 2=\dfrac{ 9 }{ 2 }=4.5 \ \text{dm}^3$

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