alleryr = 7 cm और l = 25 cm वाले एक शंकु का कुल पृष्ठीय क्षेत्रफल ज्ञात कीजिए (pi = 22/7)।
A704 cm²
B858 cm²
C154 cm²
D550 cm²
Answer & Solution
Correct answer: A. 704 cm²
कुल पृष्ठीय क्षेत्रफल pi r (l + r) = 22 x 32 = 704 वर्ग सेंटीमीटर है, जिसमें वक्र पृष्ठीय क्षेत्रफल 550 और आधार का क्षेत्रफल 154 शामिल है।
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