Question 314568
Change 3 1/2 to a fraction.
{{{D=3+1/2=6/2+1/2=7/2}}}
The radius is (1/2) of the diameter.
{{{R=(1/2)D=(1/2)(7/2)=7/4}}}
Then the area,
{{{A=pi*R^2=(22/7)(7/4)^2}}}
{{{A=(22/7)(49/16)}}}
{{{A=(22*7)/16=(11*7)/8}}}
{{{highlight(A=77/8)}}} or if you want to get back to a mixed number,
{{{77/8=9+5/8}}}