In the given figure, the length of arc AB is equal to 3 times radius r of the circle.
Find the area of sector OAB in terms of radius r.
1
1.5 r2
2
2.5 r2
3
\(\frac{1}{2} \rm r^2\)
4
3 r2
In the given figure, the length of arc AB is equal to 3 times radius r of the circle.
Find the area of sector OAB in terms of radius r.