Asked by missy

An isosceles triangle has a base 22 cm long and a base angle of 72 degrees. Find its perimeter.
Answered by Reiny
construct the right angled triangle, let the hypotenuse be h
cos 72 = 11/h
h = 11/cos72 = ....

perimeter = 22 + 2h = ....
Answered by Rin
The 2 unequal side if a parallelogram measure 4.8 inches and 8.3 inches, respectively. If the longer diagonal measure is 11.2 inches, find the lenght of the shorter diagonal.
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