The given chord length 2X is tangent to the inner circle What is the area of the annulus?"
How can I go about understanding this? There's an image of a circle but not sure how to appropriately solve it. I'd appreciate any feedback. Thanks!
The given chord length 2X is tangent to the inner circle What is the area of the annulus?"
How can I go about understanding this? There's an image of a circle but not sure how to appropriately solve it. I'd appreciate any feedback. Thanks!
Hello, LydiaK67!
The given chord length is tangent to the inner circle.
What is the area of the annulus?Code:* * * * * * x C x * A o - - - - * o * - - - - o B * | * * * * | * * * r| *R * * | * * * | * * * - - * - - - - o - - - - * - - * O
is a chord of circle with radius
It is tangent to the inner circle of radius at
. .
The area of the annulus is: . .[1]
In right triangle .[2]
Substitute [2] into [1]: .