Question 1109981
<br>
The formula for the surface area of a sphere is
{{{4(pi)(r^2)}}}<br>
On a hemisphere, the curved surface area is therefore {{{2(pi)(r^2)}}} and the flat surface area is {{{(pi)r^2)}}}, so the total surface area is {{{3(pi)(r^2)}}}.<br>
So the surface area of the sphere is 4/3 the surface area of the hemisphere.<br>
{{{(69pi)*(4/3) = 92pi}}}<br>
The surface area of the sphere is 92pi cm^2.