A circle of radius greater than 9 cm is inscribed in the square ABCD. A point P on the circle is 8 cm from side AB of the square, and 9 cm from side AD. What is the radius of the circle?
D-----------C
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| | <---circle inscribed in it
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A-----------B
2 answers
sorry the square got messed up
that's ok -- we know what a square looks like.
Looks like we have
(r-8)^2 + (r-9)^2 = r^2
Looks like we have
(r-8)^2 + (r-9)^2 = r^2