Question

plz do it in easy method it's class 10 maths

Answer 1

area of segment = area of the sector - triangle.-----------1

first calculate area of sector.
area of sector= theta / 360 * pi * r^2
theta = 120
=120 / 360 * 22/7 * 21* 21
=22 * 21
=462

area of triangle = r^2 *sin∅/2
=21 * 21 * sin(60)
=21 * 21 * √3/2

=441√3 /4

with 1,
area of segment = area of the sector - triangle.
=462 - 441√3/4
= 21/4 ( 88 - 21√3) 

hope it helps!!!!