What is the perimeter of a regular polygon with sides of length 15 cm and internal angles measuring 145° each?	Choose the correct answer.
A) 96 cm
B) 108 cm
C) 120 cm
D) 132 cm
E) 154.28 cm
Sum of all interior angles is given by:   180(n-2) = n is number of sides   180(n-2) = 145*n   from here   n = 10.28   So perimeter becomes 15*10.28= 154.28   Answer: 154.28 cm
<result>E</result>
What is the perimeter of a regular polygon with sides of length 15 cm and internal angles measuring 145° each?