ചതുരാകൃതിയിലുള്ള ഒരു ഇരുമ്പ് കട്ടയുടെ നീളം 25 സെ.മീറ്ററും വീതി 10 സെ.മീറ്ററും ഉയരം 4 സെ.മീറ്ററും ആണ്. ഇത് ഉരുക്കി ഒരു സമചതുരക്കട്ട ഉണ്ടാക്കിയാൽ ഒരു വശത്തിന്റെ നീളം എത്ര ?
A15 സെ.മീ.
B10 സെ.മീ.
C20 സെ.മീ.
D5 സെ.മീ.
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