The angle between the generatrix and the plane of the base of the cone is 60 degrees

The angle between the generatrix and the plane of the base of the cone is 60 degrees, the radius of its base is 30 degrees. calculate the volume of the cone.

Determine the area of the base of the cone.

Sb = π * R ^ 2 = π * 900 cm2.

Triangle AOB is rectangular, then tg60 = BO / AO.

ВO = AO * tg60 = 30 * √3 cm.

Determine the volume of the cone.

V = Sop * VO / 3 = π * 900 * 30 * √3 / 3 = π * 9000 * √3 cm3.

Answer: The volume of the cone is π * 9000 * √3 cm3.



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