Problem Solving

[Guest]

Klaus is working on the design of a new modern art gallery.The outline of the building is shown at the right.He is going to recommend a marble floor to the gallery owner.Klaus can put in marble tile for $16 per square foot and wants to figure out how much it will cost to tile the entire gallery.

Here are the square feet that he is working with:
30ft
20ft
30ft
30ft
20ft
20ft

What expression can I use to find the total floor area of the gallery:

a) 4(1/2*20*20)+2(30*20
b) 3(30*20)+2(1/2*20*20)
c) 3(30*20)

P.S The answer I came up with is b.
Please tell me if this is correct.

Please and Thank-You
Bowier4

 

[stapel]

The outline of the building is shown at the right.

I don't think the question is answerable without the drawing you're looking at. Sorry.

Eliz.