From a regular hexagon ABCDEF with side a,A circular arc ABF is removed with A as a center and AB as radius.What is the perimeter of the remaining portion?

Question

Answer 1

4 other remaining sides of the hexagon + (Length of the arc formed)
=4a + [(60/360)*2pie(a)]
=4a + [(1/6)*2pie(a)]

Answer 2

4 other remaining sides of the hexagon + (Length of the arc formed)
=4a + [(60/360)*2pie(a)]
=4a + [(1/6)*2pie(a)]

Answer 3

(4+(pi/2)*a

Answer 4

(4+(pi/2)*a