1/10
hope this helps u out!
1: 14 ft
2: 18
3: 11; 28
4: 8; 96
5: a = 5x3
6: a = 8x8
7: 1x42, 2x21, 3x14, and 6x7. 6x7 probably makes the most sense.
Answer:
Third option
Step-by-step explanation:
Given the following question where...

A triangle adds up to 180 degrees
50 + 120 = 170 + 10 = 180
The measurement of the third angle is 10 degrees or the third option.
Hope this helps.