Solve the Problem $\pi$ Round to the Nearest Tenth Unless Instructed Otherwise

Multiple Choice

Solve the problem. Use 3.14 as the approximate value of $\pi$ . Round to the nearest tenth unless instructed otherwise.
-The interior of a one story office building measures $51 \mathrm{ft}$ by $102 \mathrm{ft}$ and has $10 \mathrm{ft}$ ceilings. If $20 \%$ of the space is devoted to hallways, how many $2,000 \mathrm{ft}^{3}$ offices can it contain? Do not include partial offices.

A) 26 offices
B) Not enough information to solve.
C) 41,616 offices
D) 20 offices