13.7cm 4cm 3cm 7.5cm 7.5cm 11.5cm solve for the total surface area of the figure

To find the total surface area of the figure, we need to add the areas of all the faces together.

Total Surface Area = 2(13.7cm * 4cm) + 2(13.7cm * 3cm) + 2(4cm * 3cm) + 2(7.5cm * 11.5cm) + 2(7.5cm * 4cm) + 2(11.5cm * 4cm)

Total Surface Area = 2(54.8cm^2) + 2(41.1cm^2) + 2(12cm^2) + 2(86.25cm^2) + 2(30cm^2) + 2(46cm^2)

Total Surface Area = 109.6cm^2 + 82.2cm^2 + 24cm^2 + 172.5cm^2 + 60cm^2 + 92cm^2

Total Surface Area = 540.3 cm^2

Therefore, the total surface area of the figure is 540.3cm^2.