Answer:
4.2
Step-by-step explanation:
1.2 + 3 = 4.2
Hope this helps :)
If you are adding all the angles, then it equals 180 degrees.
If you are looking for the missing angle out of 360.. then it is 180
Answer:
6:30
Step-by-step explanation:
20+16+6= 42
72-42=30
there are 30 rocks that are slate