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SAT Mathematics QUESTION #5479
Question 1
An isosceles right triangle has a hypotenuse of length $58$ inches. What is the perimeter, in inches, of this triangle?
  • $29\sqrt{2}$
  • $58\sqrt{2}$
  • $58 + 58\sqrt{2}$✔️
  • $58 + 116\sqrt{2}$
Correct Answer Explanation
Leg length $s = \frac{58}{\sqrt{2}} = 29\sqrt{2}$. Perimeter $= 2s + 58 = 2(29\sqrt{2}) + 58 = 58\sqrt{2} + 58$.