Question 1203296
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This question has been (somewhat) previously answered here
<a href="https://www.algebra.com/algebra/homework/Length-and-distance/Length-and-distance.faq.question.1202999.html">https://www.algebra.com/algebra/homework/Length-and-distance/Length-and-distance.faq.question.1202999.html</a>
That link provides various hints. Please let me know if you need further help with this question.
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