The adjacent sides of a parallelogram measure 14 centimeters and 20 centimeters, and one angle measures 57°. Find the area of th
2 answers:
The area of an isosceles triangle is given by

We have the base already given, so we just have to calculate the height using the sine ratio.


You may choose to use your calculator here, but I will prefer to keep it as it is and use the calculator value at the end.
Now let's plug our values inside the formula, yo obtain,


Hello,
Let's h the height of the parallelogram:
sin 57°=h/14==> h=11,741387...
Area=h*20=234,827759... (cm²)
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