Suppose a railroad is 1 km long, and it expands on a hot day by 10cm in length. Approximately how high would the center of the rail rise above the ground
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The length of the railroad is 1km and it expands 10cm.
To solve this problem, you have to create a right triangle. You can do this by cutting everything in half.
Your hypotenuse will be 1/2km + 5cm, one of the legs will be 1/2km. To make everything simple, I converted everything into meters. So you will have 500m + .05m as the hypotenuse and 500m as one of the legs. Use the Pythagorean theorem to solve for the other leg. Do not round your answer.
My teacher emailed me a hint to answering the question. She cahnged everything to meters.
use Pythagoras theorem to solve for the other leg. that is your answer. Your teacher spelled it out for you.