text: i need help adding the perimeter of a triangle? can someone help me find the perimeter of a triangle that has a measurment of :  side 1)  2 7/16 in side 2) 1 3/16 in side 3) 2 9/16 in  i need to find it's perimeter in inches and centimeters. i need your help because i have forgot how to do fractions it is 2 7/16 +1 3/16 +2 9/16=(2+1+2)+(7/16+3/16+9/16) =5+19/16=5+1+3/16=6 3/16 inches