Find the perimeter of triangle whose sides are 2x + y, 3x + 2y and –x + 2y.
4x – 5y
4x + 5y
6x – 5y
6x + 5y
Perimeter of triangle = Sum of the sides
= (2x + y) + (3x + 2y) + (– x + 2y)
= (2x + 3x – x) + (y + 2y + 2y)
= 4x + 5y