📝 ACT Exam Prep

What is the length of the hypotenuse of a 45-45-90 triangle with legs of length 5?

A 10
B 5√3
C 5√2
D 25

✓ Correct Answer: Option C

In a 45-45-90 triangle, hypotenuse = leg × √2 = 5√2.

💡 Why is C) the correct answer?

The correct answer to the question "What is the length of the hypotenuse of a 45-45-90 triangle with legs of length 5?" is Option C: 5√2.

The other options — A) 10, B) 5√3, D) 25 — are incorrect for this ACT Exam Prep question. As explained above: In a 45-45-90 triangle, hypotenuse = leg × √2 = 5√2.

📚 About This ACT Exam Prep Practice Question

This 2-level ACT Exam Prep question from the Mathematics topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free ACT Exam Prep practice test or use flashcards for spaced repetition review.

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