a sector of a circle of radius 12 cm has the angle 120 degree, it is rolled up so that the two bounding radii are formed together to form a cone. Find the volume of the cone?
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Tan60°=6/OA
OA= 6/√3
=2√3
volume of cone=1/3πr2h
=1*22*6*6*2√3/3*7
=528√3/7
OA= 6/√3
=2√3
volume of cone=1/3πr2h
=1*22*6*6*2√3/3*7
=528√3/7
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