Environmental studies and Forestry

  1. You land on a planet of unknown circumference. At noon a wall that is 1000km from the equator casts a shadow of 10o. What is the circumference of the planet? Show the equation you used to get your answer. (Should take you about 10 minutes)
  2. The following image is data from a drill site. How deep is the basalt layer? To make the math a little easier, use 4 seconds as travel time of sonar. (Should take about 5 minutes)
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