Question

An open top box with a square base has a volume of 30ft^3. The total surface area of the box is?

a) S.A=x^2-60/x
b) S.A=x^2+60/x
c) S.A=x^2-120/x
d) S.A=x^2+120/x

Answer 1

The base is x^2
The height is 30/x^2

So, the area is x^2 + 4(x)(30/x^2)