Darcy built the dollhouse shown. what is the volume of the first floor? what is the volune of the attic space?

The volume of the first floor is 9000 inches cubed.
20*45*10=9000
The volume of the attic is 360 inches cubed.
8*45=360
You don't have to divide by two as there are two triangular prisms.

The distance from point a to point c across the coordinate plane is aproxamatly 8.94 rounded to the nearest hundredth. you use a^2 + b^2 =c^2