Given the word problem, we can deduce the following information:
Length= 21 feet
Width= 16 feet
Height =7 feet
To determine the surface area of a rectangular solid, we use the formula:
S=2LH+2LW+2WH
where:
S=Surface Area
L=Length
W=Width
H=Height
We plug in what we know:
[tex]\begin{gathered} S=2LH+2LW+2WH \\ =((2)(21)(7))+((2)(21)(16))+((2)(16)(7)) \\ \text{Calculate} \\ S=1190 \end{gathered}[/tex]
Therefore, the surface area is 1190.
