Question 134732
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Surface area of Sphere = {{{ 4 • pi  • r^2 }}}
Volume of a Sphere = {{{ (4/3) • pi • r^3}}}

1) R = X
Area = {{{4 *pi * X^2}}}
Volume = {{{ (4/3) * pi * X^3}}}

2) R = X/2
Area = {{{4 *pi * (X/2)^2}}} = {{{4 *pi * (X^2/2^2)}}} = {{{pi * X^2}}}
Volume = {{{ (4/3) * pi * (X/2)^3}}}
{{{ (4/3) * pi * (X^3/2^3)}}}
{{{ (4/3) * pi * (X^3/8)}}}
{{{ (1/6) * pi * X^3}}}