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= 5/36.62,8
= 8,722 cm
= 8,7 cm
28. Gsd² = p² - ( r1 + r2 )²
16² = 20² - (8 + r2 )²
(8+r2)² = 20²-16²
(8+r2)² = 400-256
(8+r2)² = 144
8+r2 =√144
8+r2 = 12
r2 = 12-8
r2 = 4 cm