Question -
Answer -
(i) Diameter = 28 cm
Radius, r = 28/2 cm =14cm
Volume of the solidspherical ball = (4/3) πr3
Volume of the ball =(4/3)×(22/7)×143 = 34496/3
Hence, volume of theball is 34496/3 cm3
(ii) Diameter = 0.21 m
Radius of the ball=0.21/2 m= 0.105 m
Volume of the ball =(4/3 )πr3
Volume of the ball =(4/3)× (22/7)×0.1053 m3
Hence, volume of theball = 0.004851 m3