If side of the base of a regular hexagonal pyramid is \( 5 \mathrm{~m} \) and height is \( 20 \m...

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If side of the base of a regular hexagonal pyramid is \( 5 \mathrm{~m} \) and height is \( 20 \mathrm{~m} \), then volume of the pyramid is
a. \( 250 \sqrt{3} \mathrm{~m}^{3} \)
b. \( 250 \mathrm{~m}^{3} \)
c. \( 25 \sqrt{3} \mathrm{~m}^{3} \)
d. \( \frac{25}{\sqrt{3}} \mathrm{~m}^{3} \)
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