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Elementary Geometry for College St...
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Elementary Geometry for College St...
Given concentric circles with radii of lengths R and r, where
To explain:
Two circles with a common center are called concentric circles.
A region bounded by two concentric circles is called ring.
Calculation:
The length of the radius of the outer circle is
The area of the outer circle is
Next, the length of the radius of the inner circle is
The area of the inner circle is
Now to find the area of the ring, subtract the area of the inner circle from the area of the outer circle.
Therefore,
Chapter 8 Solutions
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