Here's the question you clicked on:
joyce153
During the summer heat, a 2-mi bridge expands 2 ft in length. assuming the bulge occurs straight up the middle, how high is the bulge? The exact height of the bulge is ? ft. (Type an exact answer, using radicals as needed. Do not simplify the radical.) The height of the bulge is ? ft. (Simplify your answer. Type an integer or a decimal. Round to the nearest thousandth.)
right triangle formed by: half the horizontal (5 mi), as one leg (a) height of the bulge above the horizontal, as the other leg (b) half the expanded bridge as the hypotenuse. 5mi + 5ft (c) : Convert 5ft to miles and add to 5 mi: 5/5280 = 5.00094697 mi is the hypotenuse : a^2 + b^2 = c^2 : 5^2 + b^2 = 5.00094697^2 : 25 + b^2 = 25.00947059 : b^2 = 25.00947059 - 25 : b^2 = 0.00947059 b = .097317 mi is the height of the bulge Convert to ft .097317 * 5280 = 513.8 ft