Answer :

mhanifa

Answer:

Use Pythagorean:

  • a² + b² = c²

#1

  • x² = 13² - 5²
  • x² = 144
  • x = √144
  • x = 12

#2

  • x² = 7² + 4²
  • x² = 65
  • x = √65
  • Option D

#3

  • x² = 10² - 6²
  • x² = 36
  • x = √36
  • x = 6

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