Question

17. The base of a 30-foot ladder is placed 11 feet from the building. How

high up the building does the ladder reach, to the nearest foot? *

Answer 1

We would use the Pythagorean thrm

a=11 b=height of building c=30

11^2+b^2=30^2
121+b^2=900
b^2=779 *square root both sides*
b=28 feet