The measures of 2 angles in a triangle are equal. The third angle measures twice the sum of the equal angles Find the measures of the three angles

The three angles are 30° , 30° , 120°.

Step-by-step explanation:

To find the area of all of the figures, all you need to do is base x height or the length x width.
Your answers for 1-6 are all correct.
For 7-9, remember that the area is the length times the width. 
7) length x width, 42 x 30=1260 
8) 17 x 22= 374
9) Since the length and width are the same in a square just multiply the side by itself. 2.7 x 2.7= 7.29
Hope this helps.