По т. Пифагора R² + 16² = (R + 8)².
R² + 256 = R² + 16R + 64.
16R = 192.
R = 192/16 = 12
S=4*pi*R^2=4*pi*144=576pi.
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По т. Пифагора R² + 16² = (R + 8)².
R² + 256 = R² + 16R + 64.
16R = 192.
R = 192/16 = 12
S=4*pi*R^2=4*pi*144=576pi.