Question

Major arc AB of length 400 cm subtends an angle of 240 degrees at circle centre. Find the length of the minor arc ACB, where C is a point on the remaining part of the circumference

Answer 1

240° is 2/3 of 360°

so the minor arc is 1/3 of the whole circle
Since 400 is 2/3, the minor arc is the remaining 200 cm