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6 सेमी ऊँचे एक छिन्नक के दोनों वृत्ताकार सिरों की त्रिज्याऐं क्रमश: 14 व 6 सेमी हैं। इसका वक्र पृष्ठीय क्षेत्रफल तथा कुल सम्पूर्ण पृष्ठीय क्षेत्रफल ज्ञात कीजिए।

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छिन्नक के वृत्ताकार सिरों की त्रिज्यायें R = 14 सेमी, r = 6 सेमी

और छिन्नक की ऊँचाई h = 6 सेमी

अत: वक्र पृष्ठीय क्षेत्रफल = 628.57 सेमी2 

तथा सम्पूर्ण पृष्ठीय क्षेत्रफल = 1357.71 सेमी2

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