Question

HELP PLS I NEED THE ANSWER RN!!!
Find the surface area to the nearest whole number.

Answer 1

hmmm we have a pyramid atop which is really just four triangles and down below we have four rectangles, let's add all up.

`\stackrel{ \textit{\LARGE Areas} }{\stackrel{\textit{four triangles}}{4\left[\cfrac{1}{2}(\underset{b}{10})(\underset{h}{10}) \right]}~~ + ~~\stackrel{\textit{four rectangles}}{4(10)(11)}}\implies 200+440\implies \text{\LARGE 640}~m^2`