NEED HELP. The diagram shows the pieces Dylan will need to build the doghouse. Each square represents 1 square foot. Use the formula for the area of a rectangle to find the area of the floor piece, of each roof piece, and each side piece. Use correct units
(btw I do know the formula but there is more to the problem and I just need help)

Area of floor piece=
Area of roof piece=
Area of side piece=

(there is another question to the problem but I answered because it was easy so I just need help with the next questions as well)
What is the surface area of the whole doghouse? Show your work (you can just explain for this part and I'll put the work)

Now think about the volume of the doghouse.
a. The top of the doghouse forms a triangular prism. The volume of the triangular prism is the area of the triangle times the length of the roof. What is the volume of the triangular prism? Show your work.

b. What three-dimensional shape forms the bottom part of the doghouse?

c. What is the volume part of the doghouse? Show your work.

WILL MARK BRAINLIEST. THANK YOU TO ANYONE THAT DECIDES TO HELP, I REALLY APPRECIATE IT.