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प्रश्न
In the given figure, ABCD is parallelogram, AE ⊥ DC and CF ⊥ AD. If AB = 16 cm, AE = 8 cm and CF = 10 cm, find AD.

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उत्तर
In parallelogram ABCD, CD = AB = 16 cm
[Opposite sides of a parallelogram are equal]
We know that
Area of a parallelogram = Base × Corresponding altitude
Area of parallelogram ABCD = CD × AE = AD × CF
16 cm × 8 cm = AD × 10 cm
`AD = (16xx8)/10cm=12.8cm`
Thus, the length of AD is 12.8 cm.
संबंधित प्रश्न
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such that CE = 2DE and F is the point of BC such that BF = 2FC. Prove that:
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(2) ar (ΔEGB) = `1/6` ar (ABCD)
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(5)ΔFind what portion of the area of parallelogram is the area of EFG.
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(3) ar (ΔPEA) = ar (ΔQFD)
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[Hint: Join BD and draw perpendicular from A on BD.]

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