The area of a parallelogram is 72 cm²and its altitude is twice the corresponding base. What is the length of the base?

6 cm

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7 cm

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8 cm

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12 cm

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Solution

The correct option is A 6 cm

Area of a parallelogram, A =bh
where b is the base and h is the height of the parallelogram.
Let base = x cm.
Then, height =2x (∵ altitude is twice the base)
Area =x×2x= 72 cm²
⇒x=6 cm

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