25
Q:
A) 13 | B) 9 |
C) 11 | D) 7 |
Answer: C) 11
Explanation:
n = -8 or n = 11.
Explanation:
Let the number of sides be n.
The number of diagonals is given by nC2 - n
Therefore, nC2 - n = 44, n>0
nC2 - n = 44
n2 - 3n - 88 = 0
n2 -11n + 8n - 88 = 0
n(n - 11) + 8(n - 11) = 0
n = -8 or n = 11.
As n>0, n will not be -8. Therefore, n=11.