Question

find the perimeter of the sector of the circle of radius 10.5cm subtendind an angle of 60degree at center

Answer 1

A sector is like a slice of a circle, like a pie :)

Answer 2

So....

Answer 3

the formula is \[s=r \theta\]

60 degrees is pi/3 rad

s= (10.5)(pi/3)

that will give you the arc length or perimeter of the subtended angle.

Answer 4

Don't forget to add twice the radius, though.
You're asked for the perimeter of the sector, not the arclength.

Answer 5

thanx dude...it helped me