please help me out, thanks in advance
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we know that is a rectangle diagonals are equal and intersects each other...
therefore, AE=DE
3x-28=1/2x+12
3x-1/2x=12+28
6x+1x/2=40
7x/2=40
x= 40×2/7
x=80/7
value of AE= 3×80/7-28
240/7-28
240-196/7
44/7
value of AC= 44/7+44/7
=88/7
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Therefore AC=40 unit.
hope this will be helpful for you
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