d - David
t - tatal
m - mama
d - 3 = t/4 => ( d - 3 ) × 4 = t
d = m/3 => d × 3 = m
t = 2 + m
t = 2 + m => t = 2 + d × 3 dar t = ( d - 3 ) × 4 =>
2 + d × 3 = ( d - 3 ) × 4
2 + d × 3 = d × 4 - 12
2 + 12 = d × 4 - d × 3
14 = d
m = 14 × 3 = 42
t = 42 + 2 = 44
AB = 6 = 3/5 × 2R
R=?
6 : 3/5 = 6 × 5/3 = 30/3 = 10 = 2R
R = 10 : 2 = 5 cm