Please help im confused

The third one

Step-by-step explanation:

Since this is looking down on the cubes from above, I feel it is safe to assume that it is the third one.

From left to right, top to bottom:

3, 2, 2

2, 2, 1

2, 2, 1

We can see that all but 3 layers are 2 blocks high. The 3 block area is the top left corner, since it is 1 block higher than the 2 block areas, and the 1 block areas are the middle right and the bottom right areas.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,