Solve by using methods of factoring, the square root principle, or the quadratic formula. Round your answer to the nearest tenth.

Question

Gerry plans to place a 27 foot ladder against the side of his house to clean his gutters. The bottom of the ladder will be 6 feet from the house. How far up the side of the house will the ladder reach (in ft)?

Answer 1

a squared + 36 = 729

a squared = 693

a = square root of 693

a= 3 square root 77