A souvenir store sells a paperweight in the shape of a triangular pyramid, as shown below.



Note: Figure is not drawn to scale.

The base of the paperweight has an area of 112.5 sq cm and the height of the paperweight is 10.2 cm.

What is the volume of the paperweight?
A.
255 cu cm
B.
382.5 cu cm
C.
765 cu cm
D.
1,147.5 cu cm