A) \[\pi (r_{2}^{2}-r_{1}^{2})\]
B) \[\pi ({{r}_{2}}+{{r}_{1}})\]
C) \[\pi ({{r}_{2}}-{{r}_{1}})\]
D) \[\pi \,{{r}_{1}}{{r}_{2}}\]
Correct Answer: A
Solution :
[a] \[\pi (r_{2}^{2}-r_{1}^{2})\] (Formula)You need to login to perform this action.
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