In a circle with radius $7\,cm ,$ the perimeter of a minor sector is $\frac{86}{3}\,cm .$ Then, the area of that minor sector is $\ldots \ldots \ldots \ldots cm ^{2}$.
In a circle with radius $7\,cm ,$ the perimeter of a minor sector is $\frac{86}{3}\,cm .$ Then, the area of that minor sector is $\ldots \ldots \ldots \ldots cm ^{2}$.
- A
$154$
- B
$77$
- C
$38.5$
- D
$\frac{154}{3}$
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