CAT 2021 Slot 3 QA · Question 11

Let ABCD be a parallelogram. The lengths of the side AD and the diagonal AC are 10 cm and 20 cm, respectively. If the angle ∠ADC is equal to 30° then the area of the parallelogram, in sq. cm, is

A.
$\frac{25 ( 3 + 15 )}{2}$
B.
$25 (5 + 15)$
C.
$\frac{25 ( 5 + 15 )}{2}$
D.
$25 (3 + 15)$

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