Answer is 31 because you have to count the ones under and behind
If you can picture that you place all the boxes properly, you would count it more efficiently.
If you count the bottom layers that cant be seen, then it's 16 cubes.
Volume of the rectangular prism = 280 cubes
Volume of the rectangular prism = (280/27) yd³
length 3 and one third yd = 3 + (1/3) yd = (10/3) yd
width 2 and one third yd = 2 + (1/3) yd = (7/3) yd
height 1 and one third yd = 1 + (1/3) yd = (4/3) yd
Cubes of edge length (1/3) yd are used to fill the rectangular prism.
The length would contain (10/3) ÷ (1/3) = 10
The width would contain (7/3) ÷ (1/3) = 7
The height would contain (4/3) ÷ (1/3) = 4
Volume of the rectangular prism = 10×7×4 = 280 cubes
Volume of rectangular prism = (10/3)(7/3)(4/3) = (280/27) yd³
We know that the ratio between the number of orange cubes and the number of all cubes it 3:5.
So, we can use a proportion like
Which means, if we let c be the number of cubes,
HOPE THIS HELPS ;-)