Pls answer the ones in the yellow those aren’t the answer pls answer right to

Your answer will be what I've provided in the image for your 1st screenshot.

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,