alleryஆரம் r மற்றும் உயரம் h கொண்ட ஒரு நேர் உருளையின் வளைபரப்பைக் கொடுக்கும் சூத்திரம் எது?
Api * r^2
B2pi * r * h
Cpi * r^2 * h
D4pi * r^2
Answer & Solution
Correct answer: B. 2pi * r * h
ஒரு நேர் உருளையின் வளைந்த பக்கப் பரப்பளவு (வளைபரப்பு) 2 * pi * r * h என்பதால் பெறப்படுகிறது.
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