Question

Tolong dijawab yaaaa.. terimakasihh

Answer 1

A. L₁ = 4 × π × r₁² = 4 × 3,14 × 2² = 50,24 cm²
L₂ = 4 × π × r₂² = 4 × 3,14 × 3² = 113,04 cm²
L₃ = 4 × π × r₃² = 4 × 3,14 × 4² = 200,96 cm²
L₁ : L₂ : L₃ = 50,24 : 113,04 : 200,96

b. V₁ = 4/3 × π × r₁³ = 4/3 × 3,14 × 2³ = 33,49 cm³
V₂ = 4/3 × π × r₂³ = 4/3 × 3,14 × 3³ = 113,04 cm³
V₃ = 4/3 × π × r₃³ = 4/3 × 3,14 × 4³ = 267,95 cm³
V₁ : V₂ : V₃ = 33,49 : 113,04 : 267,95