find the perimeter and area of each parallelogram Round to the nearest tenth if necessary
figure is exactly like that
note the 30-60-90 triangle formed in the upper part of the parallelogram ... the altitude of the parallelogram is the long leg of the 30-60-90 triangle.
ratios of the sides of a 30-60-90 triangle ...
short leg = $\displaystyle x$
long leg = $\displaystyle x\sqrt{3}$
hypotenuse = $\displaystyle 2x$
finally, area of a parallelogram is $\displaystyle A = bh$
If you have no knowledge of the properties of a 30-60-90 right triangle, then you shouldn't have been assigned this problem.
Go to this site and learn about them ...
30 60 90 Right Triangles - Free Math Help