Answer:
The answer is 7y.
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Answer:

Step-by-step explanation:
Given

Required
Find D
The label of the quadrilateral are not clear. However, a more complete question illustrates that B and D are opposite sides.
To solve for D, we make use of:
---- opposite
of a
quadrilateral
Make D the subject



Though these segments aren't marked congruent in the diagram, the two lines inside the circle making up the bases of the triangles are congruent as all radii are congruent. So the triangles are congruent by SAS.
I believe you multiply all sides to get the area and you add all sides to get the perimeter.
22/7 is pie just in fraction form which makes it very logical depending on the problem.