(X-60)^2+(100/2)^2=R^2 打错了,是(X-60)^2+(100/2)^2=X^2 -
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![(X-60)^2+(100/2)^2=R^2 打错了,是(X-60)^2+(100/2)^2=X^2 -](/uploads/image/z/558516-12-6.jpg?t=%28X-60%29%5E2%2B%28100%2F2%29%5E2%3DR%5E2+%E6%89%93%E9%94%99%E4%BA%86%EF%BC%8C%E6%98%AF%28X-60%29%5E2%2B%28100%2F2%29%5E2%3DX%5E2+-)
(X-60)^2+(100/2)^2=R^2 打错了,是(X-60)^2+(100/2)^2=X^2 -
(X-60)^2+(100/2)^2=R^2
打错了,是(X-60)^2+(100/2)^2=X^2 -
(X-60)^2+(100/2)^2=R^2 打错了,是(X-60)^2+(100/2)^2=X^2 -
(X-X+60)(X+X-60)=50^2=2500
60*(2X-60)=2500
2x-60=2500/60=125/3
2x=305/3
x=305/6