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Fist you've got to find the volume of the sphere, if the radius was 4cm then it would be...4/3*pi*r3=268cm V of cylinder= pi*r2*l (the radius for example is 8cm) 268=pi*64*l L=268/64pi =1.3cm
mass moment of inertia for a solid sphere: I = (2 /5) * mass * radius2 (mass in kg, radius in metres)
The Volume of cylinder with radius of 4cm and height of 10cm is: 502.65 cm3
The circumference of a circle with a radius of 4cm is: 25.13 cm (r x 2 x pi)
radius is half the diameter. so 4cm.