Cube and a sphere r of same height find ratio of their volume
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GIVEN ;-
⇒ Sphere and cube = same height
TO FIND ;-
⇒ Ratio of their volumes = ?
SOL ;-
In the question it is given that the height of the sphere and cube are same - so this mean that their side of the cube will be also equal to the diametre of the sphere,
⇒ a = d
So to find out the answer for this sum , we need to use the given formula to find out their ratio - that is -
⇒ Volume of sphere : Volume of cube
⇒ (4/3) × π × r³ : a³
⇒ (4/3)× π× r : (2r)³
⇒ (4/3) × π × r³ : 8 × r³
⇒ (4 /3) × (22/7) : 8
⇒ (88 /21 ) : 8
⇒ (11/21) : 1
⇒ 11 : 21
So the answer is 11 : 21
⇒ Sphere and cube = same height
TO FIND ;-
⇒ Ratio of their volumes = ?
SOL ;-
In the question it is given that the height of the sphere and cube are same - so this mean that their side of the cube will be also equal to the diametre of the sphere,
⇒ a = d
So to find out the answer for this sum , we need to use the given formula to find out their ratio - that is -
⇒ Volume of sphere : Volume of cube
⇒ (4/3) × π × r³ : a³
⇒ (4/3)× π× r : (2r)³
⇒ (4/3) × π × r³ : 8 × r³
⇒ (4 /3) × (22/7) : 8
⇒ (88 /21 ) : 8
⇒ (11/21) : 1
⇒ 11 : 21
So the answer is 11 : 21
nitthesh7:
it is wrong u must do Ratio of cube and sphere (not Ratio of Sphere and cube). Hope understand and edit ur ans
Answered by
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From the Question,
Side of cube (a) = Radius of Sphere (2r)
__________________________________________________________
Then, Ratio of their volumes = Volume of Cube / Volume of Sphere
= (a³) / (4/3 π r³)
= (2 r)³ / (4/3 π r³)
Then r³ and r³ get cancelled,
= 8 / (4/3 π)
= 8 × 3 / 4 π
= 2 × 3 / π
= 6 / π (or) 42/22 (or) 21/11
__________________________________________________________
☺☺☺ Hope this Helps ☺☺☺
Side of cube (a) = Radius of Sphere (2r)
__________________________________________________________
Then, Ratio of their volumes = Volume of Cube / Volume of Sphere
= (a³) / (4/3 π r³)
= (2 r)³ / (4/3 π r³)
Then r³ and r³ get cancelled,
= 8 / (4/3 π)
= 8 × 3 / 4 π
= 2 × 3 / π
= 6 / π (or) 42/22 (or) 21/11
__________________________________________________________
☺☺☺ Hope this Helps ☺☺☺
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