Subject
Quantitative Aptitude
Topic
Areas & Volumes
The area of a circle whose radius is the diagonal of a square whose area is 4 sq,units is -
The area of a circle whose radius is the diagonal of a square whose area is 4 sq,units is -
ক)
16π sq unitsখ)
4 π sq unitsগ)
6 π sq.unitsঘ)
8 π sq.unitsExplanation
( ৪ বর্গমিটার ক্ষেত্রফল বিশিষ্ট একটি বর্গের কর্ণের সমান ব্যাসার্ধ বিশিষ্ট বৃত্তের ক্ষেত্রফল কত) ধরি বর্গের ধার =a a 2 =4 m 2 a=2 m অতএব বর্গের কর্ণ =2√2 m বৃত্তের ব্যাসার্ধ r= 2√2 m বৃত্তের ক্ষেত্রফল = πr 2 =π (2√2) 2 =8 π sq.mRelated questions
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