The answer is false.
For a square pyramid, the volume is calculated by 1/3*B*h. The height should touch the tip and lie perpendicular to the base. Slant height is used for surface area, not volume.
Barbra can walk 3200 meers in 24 minutes what are you asking?
If you need the sum than here is an equation for it 7x3= 21
-3 is the slope, use y2 - y1 over x2 - x1 equation to solve