Question 422150

given: the diameter {{{d}}} of the sphere is {{{4}}} inches...=>...the radius {{{r=d/2=2in}}}

the surface area of a sphere with radius {{{r}}} equals {{{A=4(pi)r^2}}}

{{{A=4(3.14)(2in)^2}}}

{{{A=4*3.14*4in^2}}}

{{{A=50.24in^2}}}