Question

I really need help soon please :)

Answer 1

Volume of the pyramid = 396 $\text{km}^3$

Solution:

Base of the triangle (b) = 9 km

Height of the triangle (h) = 12 km

Base area of the triangle (B) = $\frac{1}{2} bh$

                                               $=\frac{1}{2}\times9\times12$

Base area of the triangle (B) = 54 km²

Height of the pyramid (H) = 22 km

Volume of the pyramid = $\frac{1}{3}BH$

                                      $=\frac{1}{3}\times54\times22$

                                      = 396 $\text{km}^3$

Volume of the pyramid = 396 $\text{km}^3$

Hence the volume of the pyramid is 396 $\text{km}^3$.