r₁ = 2r₂ = 3*r₁ = 3*2 = 6Pole koła:P₁ = π r₁²P₁ = π* 3² = 9 πP₂ = π r₂²P₂ = π* 6² = 36 πP₂/P₁ = 36π / 9π = 4Odp. Pole zwiększy się 4 razy.
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r₁ = 2
r₂ = 3*r₁ = 3*2 = 6
Pole koła:
P₁ = π r₁²
P₁ = π* 3² = 9 π
P₂ = π r₂²
P₂ = π* 6² = 36 π
P₂/P₁ = 36π / 9π = 4
Odp. Pole zwiększy się 4 razy.