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2009 AMC 10A Problem 10

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2009 AMC 10A Problem 10AMC 10 Step by Step
Name:                             Date: September 13, 2026
Similar & Congruent Triangles · difficulty 2 of 5 · about 2 min · position P1-10

Triangle ABCABC has a right angle at BB . Point DD is the foot of the altitude from BB , AD=3AD=3 , and DC=4DC=4 . What is the area of △ABC\triangle ABC ?

figure

  1. A)

    434\sqrt3

  2. B)

    737\sqrt3

  3. C)

    2121

  4. D)

    14314\sqrt3

  5. E)

    4242

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