Step-by-step explanation:
[tex]\pi {r}^{2} \frac{h}{3} = V \\ \\ \pi {r}^{2} \frac{15}{3} = 62,8 \\ \\ \pi {r}^{2}(5) = 62,8 \\ \\ 5\pi {r}^{2} = 62,8 \\ \\ 3,99797217 ≈ \frac{62,8}{5\pi} \\ \\ 3,99797217 ≈ {r}^{2} \\ \\ 1,999492978 ≈ r \\ \\ 2 ≈ r[/tex]
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