If △ABC, D and E are the points on sides AB and AC, respectively such that ∠ADE = ∠B. If AD = 7 cm, BD = 5 cm and BC = 9 cm , then DE (in cm) is equal to:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 5.25
12/7 =9/DE.
=> DE = 7 × 9 ÷ 12
=> DE = 5.25