Question

When water freezes it's volume increases by 4% . What volume of water is required to make 221cm cube of ice

Answer 1

$water \: required \: would \: be = \\ 221 {cm}^{3} = \frac{104x}{100 } \\ 22100 {cm}^{3} = 104x \\ \frac{22100}{104} = x \\ = 212.5 {cm}^{3}$