Question

Find the total surface area.rectangular prism 3A. 6,156 km²B. 165 km²C. 2,016 km²D. 1,368 km²

Answer 1

Given:

`\begin{gathered} l=18km \\ w=18km \\ h=19km \end{gathered}`

The total surface area of a rectangular prism is given by;

`A=2(lw+lh+wh)`

Substituting the values into the formula;

`\begin{gathered} A=2((18*18)+(18*19)+(18*19)) \\ A=2(324+342+342) \\ A=2(1008) \\ A=2016km^2 \end{gathered}`

Therefore, the total surface area is 2016 square kilometers.

OPTION C is correct.