In parallelogram ABCD,diagonal AC is twice the length of diagonal BD.The perimeter of triangle ABC is 21cm and the perimeter of triangle BCD is 17cm, what is the perimeter of parallelogram ABCD?
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On the basis of composition, matter can be classified as compound, element and mixture. Solids, liquids and gases are physical states of matter
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Answer:
The Perimeter is 26 cm
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