Consider a sphere with center [math] and radius [math].
Is the point [math] on (the surface of) the sphere? (Note that these values have been rounded to two decimal places, so you should be forgiving to one or two decimal points when you test.)
Pick your answer from here:
Is the point [math] on (the surface of) the sphere? (Again, these values have been rounded to two decimal places, so you should be forgiving to one or two decimal points when you test.)
Pick your answer from here:

Solution:

Your overall score for this problem is