alleryr ત્રિજ્યા અને h ઊંચાઈ ધરાવતા લંબ નળાકારની વક્ર સપાટીનું ક્ષેત્રફળ કયું સૂત્ર આપે છે?
Api * r^2
B2pi * r * h
Cpi * r^2 * h
D4pi * r^2
Answer & Solution
Correct answer: B. 2pi * r * h
લંબ નળાકારની વક્ર પાર્શ્વ સપાટીનું ક્ષેત્રફળ 2 * pi * r * h દ્વારા આપવામાં આવે છે.
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