Metal pyramid

Find the weight of a regular quadrilateral pyramid with a base edge of 5 cm and a height of 6.5 cm, made from a material with a density 8 g/cm³.

Final Answer:

m =  433.3 g

Step-by-step explanation:

$$\begin{gathered} a=5\text{cm} \\ h=6.5\text{cm} \\ \rho =8{\text{g/cm}}^3 \\ V=\frac{1}{3}\cdot a^2\cdot h=\frac{1}{3}\cdot 5^2\cdot 6.5=\frac{325}{6}\doteq 54.1667{\text{cm}}^3 \\ m=\rho \cdot V=8\cdot 54.1667=433.3\text{g} \end{gathered}$$

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