Quandaries
and Queries 

Question: Thank you 

Hi Rob, By the circumference of a sphere I assume you mean around the equator. The circumference of a circle is 2 pi times the radius and hence you have
where r is the rddius. Thus the radius is
The surface area of a sphere is 4 pi times the square of the radius, and hence the area is
which is approximately 45.84 square feet. Penny 

