SOLUTION: How do I find the surface area and volume of a frustrum? I have looked it up and it says there are special formulas but I have not learned those and I remember my teacher teaching

Question 481463: How do I find the surface area and volume of a frustrum? I have looked it up and it says there are special formulas but I have not learned those and I remember my teacher teaching us a specific way in which you find the larger cone and then subtract the smaller cone?? Help please!
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
How do I find the surface area and volume of a frustrum.
:
Area of the conical surface:
A = 3.1416s(R+r) = 1.5708s(D+d)
:
Volume
V = 1.0472h(R^2+Rr+ r^2) = .2618h(D^2 + Dd+ d^2)
Where
s = the slant height
R = radius of the base
r = radius of the top
D = Diameter of the base
d = diameter of the top
h = vertical height
:
To find Slant height (s)
a = R-r;
s = =
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