alleryr = 7 cm અને l = 25 cm (pi = 22/7) ધરાવતા શંકુની કુલ સપાટીનું ક્ષેત્રફળ શોધો.
A704 cm²
B858 cm²
C154 cm²
D550 cm²
Answer & Solution
Correct answer: A. 704 cm²
કુલ ક્ષેત્રફળ pi r (l + r) = 22 x 32 = 704 ચોરસ સેન્ટિમીટર છે, વક્ર સપાટીનો ભાગ 550 વત્તા પાયો 154.
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