Answer:
348ft
Step by step:
I got this answer because i broke the figure up into two figures up. One figures height 4FT, width 6FT, length 2FT. The other figures height 5FT,width 6FT, length 10FT. When multiplying figure 1 I got 48FT and when multiplying figure 2FT I got 300FT then I added them together and got 348FT.