A floor plan is given for the first floor of a new house. One inch represents 10 feet. If a bedroom isfour-fifths in by nine-tenthsin. on the floor plan, what are the actual dimensions? (Round to the nearest hundredth)

a
4 ft by 4.5 ft
b
4.5 ft by 4 ft
c
9 ft by 8 ft
d
8 ft by 9 ft