# Q&A - Ask Doubts and Get Answers

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H Harsh Kankaria
Given, The radius of the spherical capsule = The volume of the capsule =  Therefore,  of medicine is needed to fill the capsule.

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H Harsh Kankaria
Given, The radius of a small sphere =  The surface area of a small sphere =  The radius of the bigger sphere =  The surface area of the bigger sphere =  And,  We know, the surface area of a sphere =  The ratio of their surface areas =  Therefore, the required ratio is

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H Harsh Kankaria
Given, The radius of a small sphere =  The radius of the bigger sphere =  The volume of each small sphere=  And, Volume of the big sphere of radius =  According to question,

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H Harsh Kankaria
Let the radius of the hemisphere be  Inside the surface area of the dome =  We know, Surface area of a hemisphere =    The volume of the hemisphere =

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H Harsh Kankaria
Given,  is the cost of white-washing  of the inside area  is the cost of white-washing  of inside area (i) Therefore, the surface area of the inside of the dome is

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H Harsh Kankaria
Given, The surface area of the sphere =  We know, Surface area of a sphere =    The volume of the sphere =

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H Harsh Kankaria
Given, Inner radius of the hemispherical tank =  Thickness of the tank =   Outer radius = Internal radius + thickness =  We know, Volume of a hemisphere =   Volume of the iron used = Outer volume - Inner volume

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H Harsh Kankaria
The radius of the hemispherical bowl =  We know, Volume of a hemisphere =  The volume of the given hemispherical bowl =  The capacity of the hemispherical bowl =

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H Harsh Kankaria
Given, Let  be the diameters of Earth  The diameter of the Moon =  We know, Volume of a sphere =    The ratio of the volumes =  Therefore, the required ratio of the volume of the moon to the  volume of the earth is

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H Harsh Kankaria
Given, The radius of the metallic sphere =  We know, Volume of a sphere =   The required volume of the sphere =  Now, the density of the metal is  per ,which means, Mass of  of the metallic sphere =  Mass of  of the metallic sphere =

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H Harsh Kankaria
The solid spherical ball will displace water equal to its volume.  Given, The radius of the sphere =  We know, Volume of a sphere =   The required volume of the sphere =  Therefore, amount of water displaced will be

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H Harsh Kankaria
The solid spherical ball will displace water equal to its volume.  Given, The radius of the sphere =  We know, Volume of a sphere =   The required volume of the sphere =  Therefore, the amount of water displaced will be

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H Harsh Kankaria
Given, The radius of the sphere =  We know, Volume of a sphere =  The required volume of the sphere =

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H Harsh Kankaria
Given, The radius of the sphere =  We know, Volume of a sphere =  The required volume of the sphere =
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