Answer:
64.96
Step-by-step explanation:
The most common benchmark percents are
and 
We are given
which is closest to
.
Now we calculate
which is equal to
.
We are left with
more to add.
We can say 
Therefore 
Now add the two.

Thus 64.96 is the answer.
We need the picture or is it just the question?
B) 4Na + O₂ → 2Na₂O
b) H₂ + Cl₂ ---> 2HCi
The Perimeter is 87 ft and the Area is 360 ft. :3