Diameter 2733

If we cut a tree trunk with a diameter of 42 cm and the width of the cutting joint is 3 mm, how many cubic cm of wood will turn into sawdust?

Correct answer:

V =  415.6327 cm³

Step-by-step explanation:

$$\begin{gathered} D=42\text{cm} \\ r=D/2=42/2=21\text{cm} \\ h=3\text{mm}\to \text{cm}=3:10\text{cm}=0.3\text{cm} \\ V=\pi \cdot r^2\cdot h=3.1416\cdot 21^2\cdot 0.3=415.6327{\text{cm}}^3 \end{gathered}$$

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