Asked by Melissa
A glass in the form of a frustrum of a cone is represented by a diagram. The glass contains water to a height of 9cm. The bottom of the glass is a circle of radius 2cm while the surface of the water is a circle of radius 6cm. Calculate the volume of the water in the glass
Answers
Answered by
Melissa
No idea
Answered by
oobleck
no idea? ever think of google?
In about a minute you can get the derivation of the handy formula
v = 1/3 πh (R^2 + Rr + r^2)
where
h = height of frustrum
r = small radius
R = large radius
Or, you can go the long way around and calculate the volume of the whole cone, then subtract the volume of the tip which was cut off.
In about a minute you can get the derivation of the handy formula
v = 1/3 πh (R^2 + Rr + r^2)
where
h = height of frustrum
r = small radius
R = large radius
Or, you can go the long way around and calculate the volume of the whole cone, then subtract the volume of the tip which was cut off.
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