Question

Sam needs to know the height of an electricity (power) pole in his neighborhood. The pole casts a
-foot shadow while he casts a
-foot shadow. Sam is
feet tall. The height of the electricity pole is blankfeet tall. Enter only the number.

The solution is

Answer 1

I can't compute a numeric answer because the shadow lengths and Sam's height are missing from your problem.

General formula (similar triangles):
pole height = (pole shadow / Sam's shadow) × Sam's height

Give me the three numbers (pole shadow, Sam's shadow, Sam's height) and I'll compute the single-number answer.