Question

A closed rectangular box with a volume of
is to be made of three different materials. The cost
of the material for the top and the bottom is $9 per sq. ft, the cost of the material for the front and
the back is $8 per sq. ft. and the cost of the material for other two sides is $6 per sq. ft. Find
the dimensions of the box (by two ways if possible) so that the cost of materials is minimized.

Answer 1

Answer:

Please mention the L and B so it will be easy to find the answer