Question 276504
the formula for circumference is
{{{C= 2*pi*r}}}
given:
{{{2*pi*r = 4*pi/3}}}
{{{r = 2/3}}}
{{{A= pi*r^2}}}
{{{A = pi*(2/3)^2}}}
{{{A = (4/9)*pi}}}
{{{(1/2)*A = (2/9)*pi}}}