A rectangular box has a square base and a closed top with dimensions x=length and h=height. How do you write the surface area in terms of x and h?

1 Answer
Jim G.
Jul 8, 2017

2x^2+4hx

Explanation:

"the cuboid has 6 faces"

"area of square base "=x xx x=x^2

"area of top is also square with area "=x^2

"the area of each of the other 4 faces " =hxx x=hx

rArr"surface area "=x^2+x^2+hx+hx+hx+hx

color(white)(rArrsurface area)=2x^2+4hx

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