A) 7.5 cm
B) 60 cm
C) 15 cm
D) 120 cm
Correct Answer: C
Solution :
\[\frac{{{h}_{2}}}{{{h}_{1}}}=\frac{{{r}_{1}}}{{{r}_{2}}}=\frac{1}{2}\Rightarrow {{h}_{2}}=\frac{30}{2}=15cm\]You need to login to perform this action.
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