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Answer:
12.8 cm
Step-by-step explanation:
Given:
AB = 16 cm, AE = 8 cm, CF = 10 cm.
(1)
AE ⊥ DC
ar(parallelogram ABCD) = AB * AE
= 16 * 8
= 128 cm²
(2)
CF ⊥ AD
ar(parallelogram ABCD) = AD * CF
= AD * 10
From (1) and (2), we get
AD * 10 = 128
⇒ AD = 12.8 cm
Therefore,
Length of AD = 12.8 cm.
Hope it helps!
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