Answer:
S.A. = 1,318 cm²
Step-by-step explanation:
The formula of a surface area of a rectangular prism:
[tex]S.A.=2(lw+lh+wh)[/tex]
l - length
w - width
h - height
We have l = 29cm, w = 8.5cm, h = 11cm. Substitute:
[tex]S.A.=2(29\cdot8.5+29\cdot11+8.5\cdot11)=2(246.5+319+93.5)\\\\=2(659)=1,318\ cm^2[/tex]
