Can anybody answer me this question will be thankful respected sirs

Question

ackaging Costs

 A rectangular box is to have a square base and a volume of 30 ft³. The material for the base costs 41¢/ft², the material for the sides costs 10¢/ft², and the material for the top costs 33¢/ft². Let x denote the length of one side of the base.

A rectangular box is shown. The base of the box has length and width each labeled x. The height of the box is labeled y.

Find the area of each side of the box, in terms of x.

Top of the Box=

 

 One Side of the Box=

 

 Bottom of the Box=

 

 

Find a function in the variable x giving the cost (in dollars) of constructing the box.

f(x) =  

 

 

Answer 1

Area of Top = x^2

Area of Bottom = x^2

Area of one Side = xy

Cost =.1*4xy+.41x^2+.33x^2 ... note Volume of box =30 = yx^2 ... y=30/x^2

Cost =.4*30/x+.74x^2