Answer:
75
Step-by-step explanation:
an arc is half a circle
120°
the sum of the interior angles of a polygon = 180°( n - 2)
where n is the number of sides
here n = 6 ⇒ sum = 180° × 4 = 720°
thus each interior angle = = 120°
Product means to multiple 12y
increase that by 11 so +11
awnser: 12y+11