Question 1073902
Surface Area of Sphere
if r is radius,
{{{4pi*r^2}}}


Surface Area for Cylinder  (tube part only - no top or bottom)
if h is length and r is radius,
{{{h*2*pi*r}}}



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big cylinder and a semi-sphere on the top. the radius of the base and the semi-sphere is 10 feet, the total height of the tower is 70 feet. what is the surface area...
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Surface area of the described object:
{{{highlight_green(70*2*pi*10+(4*pi*10^2)/2)}}}


The division by 2 used in the second added expression is because "semi-sphere" instead of a full sphere.


Simplify and compute the whole expression.


You can look for the formulas for the volumes and solve for the volume of the storage tower.