Question

Find the perimeter and area of the sector of the circle of radius 6 cm with central angle 210 degrees. ​

Answer 1

here is ur ans hope it helps you.

Answer 2

Radius of the circle = 6 cm

Angle of the sector = 210°

So , Area Of the Sector = Theta/360° x πr²

=> 210/360 x 22/7 x 6 x 6

=> 21 x 22 x 36 / 36 x 7

=> 66 cm²

And , Length of the Arc = Theta/360° x 2πr

=> 210/360 x 2 x 22/7 x 6

=> 21 x 2 x 22 x 6 / 36 x 7

=> 3 x 2 x 22 x 6 / 36

=> 36 x 22 / 36

=> 22 cm

Now perimeter of the sector = 2 x radius + arc's length

=> 2 x 6 + 22

=> 12 + 22

=> 34 cm

Hope it helped you...