Question

If you place a 39-foot ladder against the top of a building and the bottom of the ladder is 33 feet from the building how tall is the building?

Answer 1

20.78 feet

Explanation:

`39^(2) =h^(2) +33^(2) \\1521= h^(2) +1089\\h^(2)= 1521-1089\\h^(2) =432h= 20.78`

Answer 2

Formulate

Based on the given conditions, formulate:

`\sqrt{3 {9}^(2) } - 3 {3}^(2)`

Evaluate

Evaluate the equation/expression:

20.78461

SO THE ANSWER IS 20.78461