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Lines, Angles, and Triangles

SAT Math· difficulty 2/5

A right triangle has legs of length 3 and 4. What is the length of the hypotenuse?

  • A

    7

  • B

    7\sqrt{7}

  • C

    5

    check_circle
  • D

    12\sqrt{12}

Explanation

32+42=9+16=253^2 + 4^2 = 9 + 16 = 25. Hypotenuse =sqrt25=5= \\sqrt{25} = 5. (Pythagorean triple 3-4-5.)

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