Two Balls in a Cylinder

★ 6/10Quadratic Equations solid geometry Tangent Circle

Problem

A closed cylindrical container (wall thickness negligible) has base radius $4\text{ cm}$ and height $9\text{ cm}$ , and contains two iron balls of equal radius. Find the maximum possible radius of the balls, in cm.

Answer

Solution

Difficulty	6/10
Topics	Quadratic Equations, solid geometry, Tangent Circle

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