Write an expression for the perimeter of the rectangle.

A rectangle is outlined in black. The top and bottom sides both have double tick marks, with the bottom side labeled $8u$8u cm. The Left and right sides both have single tick marks, with the right side labeled $2$2 cm.
Write an expression for the perimeter of the triangle below.
Write an expression for the area of the rectangle.
Write an expression for the area of the triangle below.