28. In Figure 14, there are three circles with radii of 5 cm, 4 cm, and 3 cm, respectively. The area of the overlapping part A of the two smaller circles compared to the area of the shaded part, which is larger? A part area shaded part area. (Fill in “>”, “<” or “=”.)
This one wants a proof. Work it on paper, read the official solution, then mark
yourself honestly — the ladder only means something if the record is true.
Official solution
Reference answer: =
Source: NuminaMath-1.5,
licensed Apache-2.0.
Statement and solution reproduced as published; topic, difficulty and ordering added
by this site.