A) 200 c.c.
B) 210 c.c.
C) 250 c.c.
D) 252 c.c.
Correct Answer: B
Solution :
Difference between the volumes of the two cylinders \[=\left[ \pi r_{1}^{2}{{h}_{1}}-\pi r_{2}^{2}{{h}^{2}} \right]\] \[=\pi \left[ {{\left( \frac{7}{2} \right)}^{2}}\times 12-{{\left( \frac{21}{11} \right)}^{2}}\times 22 \right]\] \[=\frac{22}{7}\times 7\times 7\times 3\left[ 1-\frac{3\times 2}{11} \right]\] \[=210\,c.c.\]
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