1 Answer

Daniele Dellafiore · Answer 1 · 2020-04-05T16:32:03+0000

Answer:

S.A. = 486 in²

Explanation:

The formula of a volume of a cube:

V=a^3

a - length of edge

The formula of a Surface Area of a cube:

S.A.=6a^2

We have V = 729 ft³. Substitute:

$a^3=729\to a=\sqrt[3]{729}\to a=9\ in$

$S.A.=6(9^2)=6(81)=486\ in^2$