Calculus Help: Finding the maximum volume from open-top box by first derivative.

Here is the answer of an open-top box with cutting the square in the corner. We will use first derivative to find maximum volume.

#FirstDerivative
#Calculus
#Pre-calculus
#Volume
#Derivative

[sumaldecarlandreib.]

How did you get - 545 and 1825.29 in the end?

[sumaldecarlandreib.]

How did it became 10+2 square root of 7