Okay. So I find it easiest to calculate the full area as if the shape was a rectangle, then subtracting open space. We already know that length is 100, so now we just need to find width. 50 + 25 + 50 + 25 + 50 = 200. 200 x 100 =20,000. So now we just need to find the areas of open space and subtract. Both spaces have a length of 75 and a width of 25. 25 x 75 = 1875. There were 2 spaces, and 1875 x 2 = 3,750. 20,000 - 3,750 = 16,250.
The area of the figure is 16,250 feet.
Surface area of a cube is
6• area of a face or
6• (edge•edge)= 0.25 for the small cube
edge^2= 0.25/6
edge = sqrt ( 0.25/6)=.2041241452
Volume of large cube is
(Edge•6)^3=1.837117307 cube meters