Given a circle, a circumscribed square is one that completely encloses the circle, and an inscribed square is completely enclosed by the circle, as shown below

If the the difference in the areas of the two squares is 63 sq. m., then what is the area of the circle in sq. m.? Assume π =

A cone made completely of metal (i.e. it is not hollow) has a base radius of 8 cm, and height of 32 cm. If we melt it and recast it into a sphere, what will be the radius of sphere?