Question

A 20 foot ladder is placed against a building to reach a window that is 16 feet above the ground. How many feet away from the building is the bottom of the ladder?


3

4

12

15

Answer 1

use pythagorus theorum

Answer 2

what r the numbers for eac side ?

Answer 3

\[20^2=16^2+b^2\]

Answer 4

400/256=b

Answer 5

that means 15

Answer 6

i got 12?

Answer 7

its not correct

Answer 8

hmm

Answer 9

12 was the right answer

Answer 10

A trig solution:\[20\text{ Cos}\left[\text{ArcSin}\left[\frac{16}{20}\right]\right]=12 \]