Question

plz ans fast..........The diameter and thickness of a hollow metalic sphere are 12 cm and 0.01 m respectively. Find the volume of hollow sphere. The density of metal is 8.88gm per cm^3 . Find mass. Also the outer surface area of sphere

Answer 1

Diameter=12=d

Radius=r=d/2=12/2=6

Volume of sphere

$= 4 \div 3\pi \: {r}^{3}$

$= 4 \div 3(22 \div 7)( {6)}^{3}$

$= 905 {cm}^{3}$

$therefore \: volume \: of \: metallic \: sphere \: = 905 {cm}^{3}$

Hope it will help u