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In ∆ABC, if ∠ADE = ∠B, then prove that ∆ADE ~ ∆ABC. Also, if AD = 7.6 cm, AE = 7.2 cm, BE = 4.2 cm and BC = 8.4 cm, then find DE.

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In ∆ABC, if ∠ADE = ∠B, then prove that ∆ADE ~ ∆ABC. Also, if AD = 7.6 cm, AE = 7.2 cm, BE = 4.2 cm and BC = 8.4 cm, then find DE.
A. `5.8`cm
B. `5.5`cm
C. `5.7`cm
D. `5.6`cm
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Correct Answer - D
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