please give the solution of this question....
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Hypotenuse = AD+ DC
i.e 4 + 8 =12cm
now from 30-60-90 property
AB =1/2 * hypotenuse
=1/2* 12
=6cm
BC = root 3/2 * hypotenuse
= root 3/2*12
=6root 3 cm
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