A 4-ft vertical post casts a 12-in shadow at the same time a nearby cell phone tower casts a 122-ft shadow. How tall is the cell phone tower?

Question

asked Apr 3, 2019 125k views

1 Answer

Arraval · Answer 1 · 2019-04-07T19:33:32+0000

Answer:

the cell phone tower is 488 ft

Explanation:

change 12 in = 1ft

4ft x ft

------------------- = ----------------

1ft shadow 122 ft shadow

using cross products

4 * 122 = 1 * x

488 = x