Question 91545
The volume of a sphere is given by:
{{{V = (4/3)(pi)r^3}}}
If the radius is 3.00 inches, then r = 3, so...
{{{V = (4/3)(pi)(3)^3}}}
{{{V = (4/3)(pi)27}}}
{{{V = 36(pi)}}} If you use {{{(pi) = 3.14}}} as an approximation, then...
{{{V = 36(3.14)}}}
{{{V = 113.04}}}Cu.ins.

If the sphere is filled with liquid weighing 1.50 lbs/cu.in, then the weight will be:
{{{(113.04)(1.5) = 169.56}}}lbs.