Hi there! Another Brainly user asked this same question, I will link their post below so you can take a peek at the answer. Good luck on your work! :)
brainly.com/question/1177194
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To figure out just where that earthquake happened, you need to look at
your seismogram and you need to know what at least two other
seismographs recorded for the same earthquake. You will also need a map
of the world, a ruler, a pencil, and a compass for drawing circles on
the map.