Question

Area of a sector of a circle of radius 21 cm is 231 cm square find its central angle

Answer 1

Answer:

the central angle is 60 degrees

Step-by-step explanation:

r = 21

area of sector = 231 sq.cm

formula for sector is (a/360)*(π)*r^2  (here a is your angle)

thus,

231 = (a/360)*(π)*(21)^2

11 *21 = (7*3*21)*π*(a/360)

a = 60

Answer 2

Answer:

60

Step-by-step explanation:

Theta by 360 x2pir

360/6