8 cm त्रिज्या वाले वृत्त के अंदर बने वर्ग का क्षेत्रफल ज्ञात करें?
A. 256 sq cm
B. 250 sq. cm
C. 128 sq. cm`
D. 125 sq. cm
A. 256 sq cm
B. 250 sq. cm
C. 128 sq. cm`
D. 125 sq. cm
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Correct Answer – C
वर्ग का विकर्ण `=` वृत्त का व्यास
`=8xx2=16 cm`
`:.` side of square `=16/(sqrt(2))=8sqrt(2)cm`
`implies` area of square `=(8sqrt(2))^(2)`
`=128 cm^(2)`