Please adopt (1) a ÷ (1-60%) (2) (xy)/10b (H20) c (h-30)-(h-30) = 2030 = 50s Length = 2. c( 1)= 2 pair * 2 = 4 pair c(2)= 2 pair 2 pai( 1/2 1/365438(a3- 1)=(a2)m = a(n- 1)m = 20 19- 1 = 38 10。 (10ab) (10ba) So (ab) is a positive integer, so this number can be divisible by113. Let the second internal angle be x degrees x3xx65438+05 =180x = 3333 * 3 = 993315 = 48.