Q. 145.0( 4 Votes )

A right circular

Answer :

Given, Diameter of right circular cylinder = 12 cm


Radius of right circular cylinder (r1) =


= 6 cm


Height of right circular cylinder (h1) = 15 cm


Volume of Cylindrical ice-cream container = r12h1


= 6 6 15


= cm3


Diameter of cone = 6 cm


Radius of cone (r2) =


= 3 cm


Height of cone (h2) = 12 cm


Radius of hemisphere = radius of cone = 3 cm


Volume of cone full of ice-cream = volume of cone + volume of hemisphere


= r22h2 + r23


= ( r22h2 + 2r23)


= (32× 12 + 2× 33)


= (9 ×12 + 2 × 27)


= (108 +54)


= 162


= cm3


Let n be the number of cones full of ice cream.


Volume of Cylindrical ice-cream container = nVolume of one cone full with ice cream


= n


N =


n = 10


Hence, the required number of cones = 10


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