A cement block is the shape of a rectangular prism with length $1.5$ ft, width $1$ ft, and height $1$ ft.  Centered on the top of the block and passing all the way through the block are two $0.25$ ft by $0.2$ ft rectangular holes. 

1. Draw a diagram of the block.

2. What is the volume of the block?

   Hint (b):

   

   
   
   
   
   
   
   Subtract the volumes of the two inner prisms from the volume of the large outer prism.