Question 956365
 The lateral surface of a right circular cylinder is 330(pi) sq. cm.. If its altitude is 20cm, find the diameter of its base.
{{{A[L]}}}=lateral area; d=diameter of base; h=height(altitude)
{{{A[L]=d(pi)h}}}
{{{A[L]/((pi)h)=d}}}
{{{330(pi)cm^2/(pi(20cm))=d}}}
{{{(33/2)cm=d}}}
{{{16.5cm=d}}} ANSWER: The diameter is 16.5 centimeters.
CHECK: 
{{{A[L]=d(pi)h}}}
{{{330(pi)cm^2=16.5cm(pi)20cm}}}
{{{330(pi)cm^2=330(pi)cm^2}}}