Answer
$26$ square feet
Work Step by Step
The surface area $(S.A>)$ of a rectangular box is given by the formula:
$S.A.=2lw + 2lh + 2wh$
where $l$=length, $w$=width, and $h$=height.
The given box has $l=2$ ft, $w=1.4$ ft, and $h=3$ ft.
Using the formula above gives:
$S.A.=2(2)(1.4) + 2(2)(3) + 2(1.4)(3)
\\S.A.=5.6+12+8.4
\\S.A.=26$
Therefore, the surface area of the rectangular box is $26$ square feet.
