Question 1092750
Assuming this is a cylinder shaped object.
Diameter is 80 cm, so circumference is 80*3.14 cm =251.2 cm or 2.512 m.
The height is 12.5 m
The area is circumference * height or 31.4 sq m.  
31.4 m^2*140 R/m^2=439.6 R.