Area and Perimeter practice question for Railways, SSC. Review the correct answer and explanation, then continue with related practice below.
A square is inscribed in a circle and another circle is inscribed in that square. If the radius of the outer circle is 14 cm, find the area between the two circles. Use π = 22 7.
Correct Answerसही उत्तर
B. 308 cm²B. 308 सेमी²
Explanationव्याख्या
Outer circle diameter = 28 cm, which is the square diagonal.
Square side = 28
√2 = 14√2 cm.
Inner circle radius = 7√2 cm.
Outer circle area = 616 cm² and inner circle area = π(7√2)² = 308 cm².
Difference = 308 cm².
बाहरी वृत्त का व्यास = 28 सेमी।
वर्ग की भुजा = 14√2 सेमी।
अंदर के वृत्त की त्रिज्या = 7√2 सेमी।
दोनों वृत्तों के क्षेत्रफलों का अंतर = 616 − 308 = 308 सेमी²। ---
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