Answer:
6
Step-by-step explanation:
7 x 6 = 42 + 9 = 51 + 54 = 105 + 75= 180
Answer:
b=5√3, c=10
Step-by-step explanation:
30-60-90 triangle
c=2a
b=a√3
You would use the counting principal. 12X3X3
5.8/ sqrt 80=0.648 I think you are asking for the standard margin
Hope this works