Respuesta :

jainkushahra

Answer:

sum of exterior angles of a polygon = 360°

therefore,

x + 5 + x + 10 + 3x - 8 + 5x + 10 = 360°

10x + 17 = 360°

x + 17 = 360 ÷ 10 = 36

x = 36 - 17 = 19

x = 19

rounding off 19 to nearest hundred = 20

value of x will be 20