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Question

A spherical glass vessel has a cylindrical neck that is 7 cm long and 4 cm in diameter. The diameter of the spherical part is 21 cm. Find the quantity of water the vessel can hold.

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Solution


Diameter of spherical part = 21 cm
Radius of the spherical part = 10.5 cm

Volume of spherical part of the vessel =43πr3=43×227×10.5×10.5×10.5=4851 cm3
Diameter of cylinder = 4 cm
Radius of cylinder = 2 cm
Height of cylinder = 7 cm

Volume of the cylindrical part of the vessel =πr2h=227×2×2×7=88 cm3

Total volume of the vessel=4851+88=4939 cm3

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