Question 460309
A hot water tank is in the shape of a right circular cylinder surmounted by a hemisphere. How many gallons does the tank hold? ( 1.00 ft^3 contains 7.48). 
H= 4.75ft
Diameter= 2.50 ft
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radius = 1.25 ft
If the 4.75 ht includes the hemisphere, then the height of the cylinder = 3.5 ft
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Cyl vol = {{{pi*r^2*h = pi*1.25^2*3.5 = 5.46875*pi}}} cf
The hemisphere vol = {{{2*pi*r^3/3 = 2*pi*1.25^3/3 = 1.30208*pi}}}
Total = 6.7708*pi cf
=~ 159 gallons