讲解这道题目---**Extraction Content:** **Question Stem:** 如图所示，在一个长5厘米，宽3厘米的长方形中有两个圆，大圆的半径是______厘米，小圆的半径是______厘米。 Translation: As shown in the figure, there are two circles in a rectangle with a length of 5 centimeters and a width of 3 centimeters. The radius of the large circle is ______ centimeters, and the radius of the small circle is ______ centimeters. **Diagram Description:** * **Type:** Geometric figure within a rectangle. * **Main Elements:** * A rectangle with length 5 cm and width 3 cm. * Inside the rectangle, two circles are placed side-by-side. * The circle on the left is smaller (小圆). * The circle on the right is larger (大圆). * Both circles appear to be tangent to the top and bottom edges of the rectangle. * The smaller circle appears to be tangent to the left edge of the rectangle and the larger circle. * The larger circle appears to be tangent to the right edge of the rectangle and the smaller circle. **Other Relevant Text:** * Given dimensions: Length 5 厘米 (centimeters), Width 3 厘米 (centimeters). * Units for radii requested: 厘米 (centimeters). **Mathematical Formulas/Equations/Other Expressions:** * `X - 3/2 = Y -` (This handwritten expression appears separate from the main problem text and is incomplete).