1 Answer

Beerboy · Answer 1 · 2020-08-29T23:38:08+0000

Answer:

S.A. = 1,318 cm²

Explanation:

The formula of a surface area of a rectangular prism:

S.A.=2(lw+lh+wh)

l - length

w - width

h - height

We have l = 29cm, w = 8.5cm, h = 11cm. Substitute:

$S.A.=2(29\cdot8.5+29\cdot11+8.5\cdot11)=2(246.5+319+93.5)\\\\=2(659)=1,318\ cm^2$