Question

plzzzzzzzzzzz solve this

Answer 1

∠ADE = ∠CBA

∠A IS COMMON

THEN BY , AA

ΔADE  ~ ΔABC

THEN

AD/DE = AB/BC

7.6/DE = (7.2+4.2)/8.4              [∵ AB = AE + BE ]

⇒7.6/DE = 114/84

∴ DE = (7.6  x 84)/114 = 5.6 cm

ok

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