A) r
B) 2r
C) 3r
D) 4r
Correct Answer: B
Solution :
Let the radius of the cone be .R, then \[\frac{4}{3}\pi {{r}^{3}}=\frac{1}{3}\pi {{R}^{2}}\times r\] \[(\because h=r)\] \[\Rightarrow \] \[{{R}^{2}}=4{{r}^{2}}\]\[\Rightarrow \]\[R=2r\]You need to login to perform this action.
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