Question

Find the area of segment AYB. If radius of the circle is 21 cm and angle AOB = 120. Use pie = 22/7​

Answer 1

Answer:

271.04 cm2

Step-by-step explanation:

Given angle of arc = 120 degrees

radius of circle = 21 cm

Area of circle = π*r^2

                 =3.14*21*21

                 =1386 cm2

Area of  Arc= (angle of arc/ 360)*area of circle

                   = (120 /360)*1386

                    =1386/3

                     =462 cm2

Area of triangle = a*b*sinx / 2

                          =21*21*sin(120) /2

                          =190.96 cm2

Area of segment = area of arc - area of triangle

                            =462 - 190.96

                            =271.04 cm2

Answer 2

Answer:

Step-by-step explanation: