Let x be the length and breadth of the box and height be y.
∴ Volume = V = x2y = 1024
Total cost of top and bottom = 2 × x2 × 5 = 10x2
Total cost of sides = 4 × xy × 2.5 = 10xy
∴ Total cost
∴ The cost of the box is minimum when x = 8 cm.
∴ Total cost = Rs. 1920
Rate this question :
If the sum of theMathematics - Board Papers
A metal box withMathematics - Board Papers
Show that aRD Sharma - Volume 1
Find the local maMathematics - Board Papers
Prove that the seMathematics - Board Papers
Prove that the raMathematics - Board Papers
Prove that the leMathematics - Board Papers