I'm tasked with creating a 30x40cm box, cutting out 4 small quadrants in the corners and then folding the paper up to make a box. What I then need to do is find the optimal x-value, so that I can produce the maximal amount of volume.

What I've done so far is gone:

f(x)=x(30-2x)(40-2x)=0

Solved it, and gotten x=0, x=15 or x=20

Is the question answered by just saying the max is x=20?

Question

I'm tasked with creating a 30x40cm box, cutting out 4 small quadrants in the corners and then folding the paper up to make a box. What I then need to do is find the optimal x-value, so that I can produce the maximal amount of volume.

What I've done so far is gone:

f(x)=x(30-2x)(40-2x)=0

Solved it, and gotten x=0, x=15 or x=20

Is the question answered by just saying the max is x=20?

anonymous · Answer

Nevermind then. Thanks for the 'help'.