ഒരു വൃത്തത്തിൻ്റെ വൃത്ത പരിധിയും (ചുറ്റളവ്) പരപ്പളവ് (വിസ്തീർണ്ണം) ഇവ തുല്യമായാൽ അതിൻ്റെ വ്യാസം എത്ര?
A2 യൂണിറ്റ്.
B𝝅 യൂണിറ്റ്
C4 യൂണിറ്റ്
D7 യൂണിറ്റ്
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