the diameter of an iron ball is used to putting the shot is 12cm

the diameter of an iron ball is used to putting the shot is 12cm. the density of the iron is 7.8g/cm^3. calculate the mass of the ball in kg
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The volume of the ball is 4/3(pi)r^3, where r is the radius, which is half of 12cm=6cm. The volume is therefore about 904.779cc. Density is mass divided by volume, so if m is the mass, 7.8=m/904.779. m=7.8*904.779=7057.27g approx.

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