# geometry

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can someone help me please on this question:

What is the diameter of a cone with height 8 m and volume 150 m3 ?

• geometry -

V = pi*r^2*h

V = 150 m^3
h = 8 m

150 = pi*r^2*8

Solve for r (the radius) then multiply by 2 to obtain the diameter.

• geometry -

Only, this is a cone, not a cylinder.

V = 1/3 pi r^2 h

• Geometry -

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