Well i have my work cut out for me :(. Question about A-frame coops

[SophieLain127]

I finally made it back out to the back yard where our half finished coop is. Unfortunately the back had fallen off and the window fell out and busted (luckily in the coop as opposed to the grass). The base and legs are still doing strong looks like I'm going to half to start over.

If the base is 3 1/2 x 4 ft and it is 5 ft tall how would I find out the square footage?

 

[kichohana]

3.5 x 4 = square footage. do not need to be concerned with cubic.

 

[SophieLain127]

Thanks that's what I thought but with the slanted sides I wasn't sure.