The range finder is 112 feet from the building ( adjacent ) and 131 feet from the top of the building ( hypotenuse ). We will use the Pythagorean theorem: x² = 131² - 112² x² = 17,161 - 12,544 x² = 4,617 x = √ 4,617 x = 67.948 The height of the building: h = x + 3 = 67.948 + 3 = 70.948 ≈ 70.9 ft ( to the nearest tenth ) Answer: h = 70.9 feet.
