1 Answer

Chris Gaudreau · Answer 1 · 2020-07-31T17:03:35+0000

Answer:

S.A. = 1,123 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 = 11cm, w = 8.5cm and h = 24cm. Substitute:

$S.A.=2\bigg((11)(8.5)+(11)(24)+(8.5)(24)\bigg)\\\\S.A.=2(93.5+264+204)\\\\S.A.=2(561.5)\\\\S.A.=1,123\ cm^2$