The diagram of the solid is shown below:
The surface area ould be the sum of the area of each face
The area of the first rectangular face = 1.5 * 3.3 = 4.95 cm^2
The area of the middle rectangular face = 2.5 * 3.3 = 8.25 cm^2
The area of the third rectangular face = 2.0 * 3.3 = 6.6 cm^2
Area of each triangle is 1/2 * base * height = 1/2 * 2 * 1.5 = 1.5
Since the faces are 2, area of both triangular faces = 1.5 * 2 = 3 cm^2
Total surface area of the solid is
4.95 + 8.25 + 6.6 + 3 = 22.8 cm^2
