Question

Find d, the depth of the water

Answer 1

What the person said above me

Answer 2

d=27 ft

Explanation:

U need use Thales's theorem:

height of smaller triangle (15)divide by side (40) is eaqul to height of bigger triangle (d) divide by side (72).

`(15)/(40) =(d)/(72) \\40*d=15*72\\d=(15*72)/(40) \\d=27`