Question

The radius of a circle is 6cm and the area of a sector of this circle is 18 is to 6/7 cm. what is the angle of the sector​.

Answer 1

radius = 6 cm

area = 22/7 × 6 × 6

area = 132 × 6/7

area = 792/7

area of a sector

= 18 : 6/7

= 18/6/7

= 18 × 7/6

= 21

792/7 cm^2 = 360 degree

21 cm^2 = ? degree

(21 × 360/792/7 )degree

(21 × 360 × 7/792)degree

(147/2.2)degree