Question
In a circle of radius $1 \mathrm{cm},$ the area of a certain sector is $\pi / 5 \mathrm{cm}^{2} .$ Find the radian measure of the central angle. Express the answer in terms of $\pi$ rather than as a decimal approximation.
Step 1
Step 1: The area of a sector of a circle is given by the formula $\frac{1}{2}r^{2}\theta$, where $r$ is the radius of the circle and $\theta$ is the central angle in radians. Show more…
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