A) \[15\pi \]
B) \[12\pi \]
C) \[18\pi \]
D) \[8\pi \]
Correct Answer: A
Solution :
Here \[2a=10m\]and\[2ae=8m\]; \\[e=\frac{4}{5},\,a=5m\] \ \[{{b}^{2}}={{a}^{2}}(1-{{e}^{2}})=9\]Þ \[b=3\] Thus, required area\[=\pi ab=15\pi \,sq.metre\].You need to login to perform this action.
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