Jawaban:
L=753,6
πrs=753,6
(3,14)(r)(20)=753,6
62,8r=753,6
r=753,6/62,8
r=12cm
La=πr²=(3,14)12²=452,16cm²
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Jawaban:
L=753,6
πrs=753,6
(3,14)(r)(20)=753,6
62,8r=753,6
r=753,6/62,8
r=12cm
La=πr²=(3,14)12²=452,16cm²