Two discs,each of length 11.6 cm are laid on a table with their centers 14cm apart.

find the area common to the two discs?

i used the formula 1/2(r^2)theta to find the area of sector and then subtract the area of triangle from it 1/2(r^2)sin.theta

the values i get are 60.14 for area of sector

and 105.62 (i'm in radians)

whats going wrong here.are my value right?