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Volume of a cone, V = 1/3 πr^{2}h

where r is the radius and h is the height

radius = diameter/2

radius = 6.6/2 = 3.3

54.45π = 1/3 π(3.3)^{2}h

multiply both sides by 3

163.35π = π(3.3)^{2}h

Divide both side by (3.3)^{2}π

h = 163.35π / π(3.3)^{2}

h = 15

**Ans 3**

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