SOLUTION: a parralelogram has sides that are 10cm and 20cm long. the measure of the acute angles of the parallelogram is 30 degrees. whatt is the area of the parallelogram?

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Question 390301: a parralelogram has sides that are 10cm and 20cm long. the measure of the acute angles of the parallelogram is 30 degrees. whatt is the area of the parallelogram?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,        

parallelogram with sides that are 10cm and 20cm long

 sin 30° = h/10cm

 10cm* sin 30° = h

          5cm = h

Area is base*height

 a = 5cm* 20cm = 100cm^2