Answer:
A i think
Step-by-step explanation:
3rd option
I think it is 0.002
Yes it can be solved.
I did this stuff in like 4th grade lollll
a = 9
a^2 = 41^2 - 40^2
a^2 = 1681-1600 = 81
A=a2=3.42≈11.56
i believe