3.3 The total surface area of a rectangular prism: width = 2cm front length = 5cm height = 15cm 15cm 2cm The total surface area (TSA) of the rectangular prism above can be calculated as follows: 5cm • Area of the surface of the rectangle in front + area of the surface of the rectangle at the back (they are equal) + area of the surface of the rectangle on the left +area of the surface of the rectangle on the right (they are equal) + GIVEN: The area of the rectangle in front = 15x5= 75cm² area of the surface of the rectangle at the bottom + area of the surface of the rectangular at the top (they are equal) 3.3.1 Determine the area of the rectangle on the left side of the rectangular prism. 3.3.2 Determine the area of the rectangle at the bottom of the rectangular prism. 3.3.3 Determine the total surface area (TSA) of the rectangular prism. (2)​