What is the perimeter of a regular polygon with sides of length 15 cm and internal angles measuring 130° each? Choose one:
A) 108 cm
B) 118 cm
C) 120 cm
D) 132 cm
E) 144 cm
Sum of all interior angles is given by:   180(n-2) = n is number of sides   180(n-2) = 130*n   from here   n = 7.2   So perimeter becomes 15*7.2= 
<gadget id="calculator">15*7.2</gadget>
<output>108</output>
108   108 cmnswer: 108 cm
<result>A</result>
What is the perimeter of a regular polygon with sides of length 15 cm and internal angles measuring 130° each?