Please helpp I suck at math

Iwill give you ! what is the measure of ∠v ?

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

Geometry - finding area of regular polygons and sectors (check my math, i can’t find the error)