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butalik [34]
3 years ago
5

Find the volume of the square based pyramid.

Mathematics
2 answers:
labwork [276]3 years ago
5 0
Finding the <span>height of the pyramid:

\left(\dfrac{6}{2} \right )^{\!\!2}+h^{2}=8^{2}\\ \\ \\ 3^{2}+h^{2}=8^{2}\\ \\ h^{2}=8^{2}-3^{2}\\ \\ h^{2}=64-9\\ \\ h^{2}=55\\ \\ h=\sqrt{55}\mathrm{~m}


Finding the base area:

S=6^{2}\\ \\ S=36\mathrm{~m^{2}}


Formula for the volume of the pyramid:

V=\dfrac{S\cdot h}{3}\\ \\ \\ V=\dfrac{36\cdot \sqrt{55}}{3}\\ \\ \\ V=\dfrac{\diagup\!\!\!\! 3\cdot 12\cdot \sqrt{55}}{\diagup\!\!\!\! 3}\\ \\ \\ \boxed{\begin{array}{c} V=12\sqrt{55}\mathrm{~m^{3}} \end{array}}

</span>
frozen [14]3 years ago
4 0
A = 1/3 * s^2 * h where s is a side of the base and h is the height.
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