Bihar Police Constable practice question
The radius of a circle is 42 cm. Find the area of the circle. (Use π = 22/7)
From a Bihar Police Constable Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (C) 5544 cm²
Area of a circle = πr². Here r = 42 cm, so Area = (22/7) × 42 × 42 = 5544 cm².
हिंदी में प्रश्न
एक वृत्त की त्रिज्या 42 सेमी है। वृत्त का क्षेत्रफल ज्ञात कीजिए। (π = 22/7 का प्रयोग करें)
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सही उत्तर: (C) 5544 सेमी²
वृत्त का क्षेत्रफल = πr² होता है। यहाँ r = 42 सेमी है, इसलिए क्षेत्रफल = (22/7) × 42 × 42 = 5544 सेमी² है।
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