The following journal entry appears in the books of X Co. Ltd.
\[\text{Bank A/c Dr. 4,75,000} \\ \text{Loss on Issue of Debentures A/c Dr. 75,000} \\ \text{To 12\% Debentures A/c 5,00,000} \\ \text{To Premium on Redemption of Debenture A/c 50,000} \]
In this case, the debentures have been issued at a discount of 5%. What is the rate of premium on redemption of debentures?
A carpenter needs to make a wooden cuboidal box, closed from all sides, which has a square base and fixed volume. Since he is short of the paint required to paint the box on completion, he wants the surface area to be minimum.
On the basis of the above information, answer the following questions :
Find a relation between \( x \) and \( y \) such that the surface area \( S \) is minimum.