- In each case you can have 9 full circles of radius 2.
- The area of the rectangle is \(180\) square feet and the area of the 9 circles is approximately \(113\) square feet. There are \(67\) square feet not covered by the circles, approximately.
- The area of the larger circle is \(9π\) and the area of the smaller circle is \(4π\) . The area of the ring is the difference between the two or \(5π\).
- The length of the arc is: \(\dfrac{45}{360} \cdot2π(3)\) or \(\dfrac{3π}{4}\).

Return to Practice (Area of Circles)

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