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The point (2,-1) is on the circumference of a circle with centre(-4,3) what is the area of the circle?

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  1. Find the distance between the 2 points using the formula
    d=v(?(x_2-x_1)?^2+?(y_2-y_1)?^2 )
    then you have the radius
    now use the formula A=pr^2

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