alleryr ત્રિજ્યા ધરાવતા ગોળાની કુલ બાહ્ય સપાટીના ક્ષેત્રફળની ગણતરી કઈ બીજગણિતીય પદાવલિ કરે છે?
A2pi * r^2
B4pi * r^2
C(4/3)pi * r^3
D(2/3)pi * r^3
Answer & Solution
Correct answer: B. 4pi * r^2
r ત્રિજ્યા ધરાવતા ગોળાની સપાટીનું ક્ષેત્રફળ 4 * pi * r^2 દ્વારા આપવામાં આવે છે.
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