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A planet is made of two materials of den...

A planet is made of two materials of density `p_(1)` and `p_(2)` as shown in figure. Th acceleration due to gravity at surface of planet is same as a depth 'R'. The ratio of `(p_(1))/(p_(2))` is `(a)/(b)`. Find value of `(a^(b)+1)/(86)` (`a` and `b` are lowest possible integers)

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