A parallelogram has sides A, B, C, and D. Sides A and B have a length of #3 # and sides C and D have a length of # 5 #. If the angle between sides A and C is #(7 pi)/18 #, what is the area of the parallelogram?

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Answer 1 · 2018-06-01T13:17:55

Area of parallelogram #A_p = 14.1# sq units

Area of parallelogram #A_p = a b sin theta#

#a = 3, b = 5, theta = (7pi)/18#

#A_p = 3 * 5 * sin ((7 pi)/18)= 14.1# sq units