Question

a parallelogram has sides 34cmand 20cm .One of its diagonals is 42cm. Calculate its area

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Answer 1

$\frac{1}{2} \times 42 \times (34 + 20) \\ \\ = > \frac{1}{2} \times 42 \times 54 \\ \\ = > 1134$

So, the area of parallelogram will be 1134 cm²

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Answer 2

the area of parrallelogelaram is 574.40cm2