Answer:
5x^2 + 29x -6 and 9x + 24
Explanation:
Perimeter:
3x -1 + x + 6 + 4x + 7 + 2x + (4x+7-3x-1 or x + 6) + (x+6 - 2x or -x+6)
9x + 24
Area:
(3x - 1)(x + 6) = 3x^2 + 17x - 6
(2x)(4x + 7 - 3x - 1 or x + 6) = 2x(x+6) = 2x^2 + 12x
3x^2 + 17x - 6 + 2x^2 + 12x = 5x^2 + 29x -6