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In triangle ABC, ∠A = 90°, AB = 6 cm and AC = 8 cm. The bisector of ∠A meets BC at D. How long is AD?

Competition practiceGeometry
  • A24√2/7 cm
  • B5 cm
  • C48/7 cm
  • D4√2 cm

Step-by-Step Solution

Area ABD + area ADC = area ABC: . So and cm. (5 cm is the median.)
Answer: A) 24√2/7 cm

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