Question

Find the radius of the circle whose one sector has area of $66	ext{ sq. cm.}$ and the length of its arc is $22	ext{ cm}$.

Accepted Answer

6. Area of sector = $\frac{1}{2} l r$. $66 = \frac{1}{2} 	imes 22 	imes r \implies 66 = 11r \implies r = 6	ext{ cm}$.

Radius of circle given sector area and arc length

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