Question

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Answer 1

Answer:

B. 2106 pi mm³

Step-by-step explanation:

the solution is attached,

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Answer 2

Answer:

B.2106π mm^3

Step-by-step explanation:

here is the volume of a drill

$\pi \: {r}^{2} h \: + \frac{1}{3} \pi \: {r}^{2} h$

$\pi \times 81 \times 18 + \frac{1}{3} \times \pi \times 81 \times 24$

$> > > 2106 \pi \: {mm}^{3}$