Please help find the surface area of this

Total surface area of the figure =

Step-by-step explanation:

Surface area of the figure= Area of two triangles+Area of the three rectangles

Area of the two opposite triangles in the figure=

Base=12 cm

Height=16 cm

Area of the two triangles:

Area of the Three rectangular faces are:

         For , Length= 20 cm     and  width= 13 cm

For Length=13 cm   and Width= 12 cm

For length=16 cm       and  Width= 13 cm

Total surface area of the figure:

1) c 2143.6 cm

2) c 113.0 m

3) a 33.5 ft

4)   d 2 cm

5) c 20 mm

6) 180 in

7) d 120 ft