3.5555555556 / the third one
Answer: 530.66 units²
<u>Step-by-step explanation:</u>

Answer:
Volume of sphere is 
Step-by-step explanation:
It is given that Hal says that volume of sphere is 
Volume of sphere is given by 




Now using 3.14 in place of 
Now volume of sphere is


Therefore volume of sphere when we use 3.14 in place of
is 
And the Hal likely error is he uses
directly for calculation of volume.
If you reflect across the x-axis, the y value change from positive to negative.
If you reflect across the y-axis, the x value changes from positive to negative