if the angles of an n sided polygon are in A.P and a

• For n sided polygon sum of interior angles =(n-2)180
  So, for n=12 the sum of angles=10*180=1800
  
  so. s=n/2(2a+(n-1)d)
  300=2a+11d;
  the minimum value of a=23, that will give d=23.
  
  All the other options does not satisfy their respective conditions.
  
  Hence, 12 is the correct answer.
• 11 years agoHelpfull: Yes(6) No(5)
• Sorry, there is correction for my above solution.
  the minimum value that will satisfy the condition is a=29..
• 11 years agoHelpfull: Yes(5) No(3)
• if the angles of an n sided polygon are in A.P and a>=20 and d>=20 then wat is the maximum possible value of n?
  a)12
  b)14
  c)21
  d)cant determine
  
• 11 years agoHelpfull: Yes(2) No(1)
• (n-2)*180=n/2(2a+(n-1)*d)
  to find maximum possible value of n put minimum possible value of a and d
  Hence we get,
  180*(n-2)=n/2*(n+1)*20
  after solving it..n=29/2(approximately)which is 14 when we take integer value.
  Ans.Maximum possible value of n is 14
• 11 years agoHelpfull: Yes(2) No(2)