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Euclid R2Drew2 Edition Paper 1 · Q6

Paper 1Geometry

The circles

x2+y2=25x^2+y^2=25

and

(x−8)2+y2=r2(x-8)^2+y^2=r^2

intersect in a common chord of length 88.

There are two possible values of r2r^2.

What is their sum?

A162162
B170170
C178178
D186186
E194194
F202202

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