Solve Area Problem $13 \mathrm{ft}$ By $21 \mathrm{ft}$ the Ceiling Is $12 \mathrm{ft}$

Multiple Choice

Solve area problem.
-A room measures $13 \mathrm{ft}$ by $21 \mathrm{ft}$ . The ceiling is $12 \mathrm{ft}$ above the floor. the door is $3 \mathrm{ft}$ by $7 \mathrm{ft}$ . A gallon of paint will cover $88.1 \mathrm{ft}^{2}$ . How many gallons of paint are needed to paint the room (including the ceiling and not including the door) . Round you answer up the the next whole number.

A) 3 gallons
B) 10 gallons
C) 22 gallons
D) 13 gallons