Question

PLEASE HELP ME :)
A 13-foot ladder is leaning against a tree. The bottom of the ladder is 5 feet away from the bottom of the tree. Approximately how high up the tree does the top of the ladder reach?


2.4 feet

6 feet

9.2 feet

12 feet

Answer 1

a^2 + b^2 = c^2

4^2 + b^2 = 10^2

16 + b^2 = 100

b^2 = 100 - 16

b^2 = 84

b = SqrRt 84 = 9.2 <- Correct answer!

Answer 2

The answer is 12 feet, and you just use the pythagorean theorem to solve it.