H = h₁-h₂ =√(R² -(b/2)²) -√(R² -(a/2)²) =√(5² -3²) +√(5² -4²) =4 -3 =1.
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9) H = h₁+h₂ =√(R² -(a/2)²) +√(R² -(b/2)²) =√(125² -120²) +√(125² -35²) =
√5*245 +√90*160= 5*7 +3*4*10 =155 .
10) не видно