Q. 73.5( 4 Votes )

# If the radius of the base of a right circular cone is 3*r* and its height is equal to the radius of the base, then its volume is

A. π*r*^{3}

B. π*r*^{3}

C. 3π*r*^{3}

D. 9π*r*^{3}

Answer :

We have,

Radius of base of cone = 3r

Height of cone = 3r

Volume of cone =

= 9πr^{3}

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