SOLUTION: If A(3,-2) and B(7,2) are the endpoints of the diameter of a circle, what is the area of a circle?

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Question 644505: If A(3,-2) and B(7,2) are the endpoints of the diameter of a circle, what is the area of a circle?
Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!
use formula for distance between two points to find the diameter of a circle
If A(,) and B(,), then the diameter of a circle is:
Solved by pluggable solver: Distance between two points in two dimensions
The distance (denoted by d) between two points in two dimensions is given by the following formula:



Thus in our case, the required distance is



For more on this concept, refer to Distance formula.


the area of a circle is ..........since diameter is approximately , then

...round

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