A hollow spherical shell is made of a metal of density 28 g/cm³. Its internal and external radii are 2 cm and 5 cm, respectively. What is the approximate weight (in kg) of the shell? (Take π = \( \frac{22}{7} \), \(\text{Density}=\frac{\text{Mass}}{\text{Volume}}\))
If 56% of a number is equal to \( \frac{5}{9} \) of another number, then what is the ratio of the first number to the second number?