Answer:
[tex]725.42 cm^{2}[/tex]
Step-by-step explanation:
Surface area will be SA=2(lw+lh+wh) where l represent length, w represent width and h represent height
Given information
Length, l=20.3 cm
Width, w=9.5 cm
Height, h=5.7 cm
Substituting the above then surface area will be
[tex]SA=2(20.3*9.5+ 20.3*5.7+ 5.7*9.5)=725.42 cm^{2}[/tex]
Therefore, the surface area is equivalent to [tex]725.42 cm^{2}[/tex]
