CPM Homework Help : GC Problem 11-46

Multiple Choice: Calculate the volume of the rectangle-based pyramid at right.

$84\text{ units}^3$

$648\text{ units}^3$

$882\text{ units}^3$

$1764\text{ units}^3$

None of these

Rectangular Pyramid, with dashed line segment from top vertex, perpendicular to center of rectangle base, labeled 21, front edge of base labeled, 12, right edge of base labeled, 7.

Hint:

$\text{Volume}=\frac{1}{3}(\text{area of base})(\text{height})$