Hello all! I just found this site and was hoping I could get some Trig help.

Could you please check my work?

given r=9cm and theta=120deg

$\displaystyle A=1/2(r^2)(/theta)$

$\displaystyle 1/2(9cm)^2(120/360)$

$\displaystyle 1/2(81cm^2)(120/360)$

$\displaystyle (40.5cm^2)(120/360)$

$\displaystyle A=13.5cm^2$

Thanks for taking a look!

Joe