Question 1126290

given:

{{{d=12cm }}}->{{{r=6cm}}}
{{{Density= 7.8(g/cm^3)}}}


{{{V = (4/3)pi*r^3 }}}

{{{V = (4/3)pi*(6cm)^3 }}}

{{{V = (4/cross(3))pi*cross(6)2cm*(6cm)^2}}}

{{{V = 4pi*2*36cm^3}}}

{{{V = 4pi*2*36cm^3}}}

{{{V= 288pi*cm^3}}}


{{{Mass = Density * Volume}}}

{{{mass =(288pi*cm^3)*7.8(g/cm^3)}}}

{{{mass =(288pi)*7.8g}}}

{{{mass =7057.27g}}}

 in kg: {{{1g = 0.001kg}}}


{{{mass =(7057.27*0.001 )kg}}}

{{{mass = 7.05727kg}}}

{{{mass = 7.057kg}}}