alleryr = 7 cm અને h = 3 cm (pi = 22/7) ધરાવતા બંધ નળાકાર પાત્ર (કેન) નું કુલ બહારનું ક્ષેત્રફળ શોધો.
A352 sq cm
B220 sq cm
C308 sq cm
D440 sq cm
Answer & Solution
Correct answer: D. 440 sq cm
વક્રસપાટીનું ક્ષેત્રફળ 2 pi r h = 132 વત્તા બે પાયાનું ક્ષેત્રફળ 2 pi r² = 308 મળીને 440 ચોરસ સેમી (sq cm) થાય છે.
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