alleryસંપૂર્ણ સિલિન્ડર (r=6,h=8 cm) સમાન r,h નો નક્કર શંકુ ધરાવે છે. તેનું પાણી સિલિન્ડરમાં રેડો r=4 cm. નવી ઊંડાઈ?
A12 cm
B8 cm
C6 cm
D18 cm
Answer & Solution
Correct answer: A. 12 cm
પાણીનું પ્રમાણ છે π×6²×8 −
(1/3)π×6²×8 = 192π cm ³;
પાયાના ક્ષેત્રફળ દ્વારા વિભાજન 16π ઊંડાઈ 12 cm આપે છે.
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