Question

in adjoining figure ABCD is a parallelogram then its area is equal to
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Answer 1

Step-by-step explanation:

$l \sqrt{ {d}^{2} } - {l}^{2}$

$3 \sqrt{ {4}^{2} - {3}^{2} }$

$3 \sqrt{16 - 9} = 3 \sqrt{7}$

Therefore Area = 3√7cm²