a cone is 8.4 cm high and the radius of its base is 2.1cm it is melted and recast into a sphere .find the radiys of the sphere
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volume of cone =1/3 ×22/7 ×2.1×2.1×8.4
=38.808cm cube.
volume of sphere=38.808
4/3×22/7×r×r×r=38.808
rxrxr=38.808×3/4 ×7/22
r×r×r=37.044
r=root 37044/1000
r=33.33/10
r= 3.33
=38.808cm cube.
volume of sphere=38.808
4/3×22/7×r×r×r=38.808
rxrxr=38.808×3/4 ×7/22
r×r×r=37.044
r=root 37044/1000
r=33.33/10
r= 3.33
Aditicute222:
unfortunately parishmita the answer is coming .....R=2.1......i am also confused ...i had also tried & my answer is also coming 3.33 only ..
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