Question 1090661
r, radius of the unfolded cone sector


{{{r^2=28^2+96^2}}}
{{{r^2=10000}}}
{{{r=100}}}


circumference of the cone was  {{{2pi*28=56pi}}}.


Unfolded cone, now the sector of a circle, has arc of {{{56pi}}}.
Circumference of the entire circle would be {{{2*pi*100}}}.


Area of the sector:  {{{((56pi)/(2*pi*100))pi*100^2}}}-----simplify this.