A box shaped block has a length equal to twice the width and the total surface area is 200cm^3. Find the dimensions of the maximum volume of the block:
This was my functions
Volume = [w(2w)] multiplied by (d)
SA = 2[w(2w)]+2(dw)+2(d(2w))
d = (200-4w^2)/(2(w+2w))
Is that right? How would you approach this question?