Jawaban:
Lp = π . r . (r + s)
Lp = 3,14 . 20 cm . (20 cm + 25 cm)
Lp = 31,4 . 2 cm . (45 cm)
Lp = 62,8 cm . 45 cm
Lp = 2.826 cm²
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Jawaban:
Lp = π . r . (r + s)
Lp = 3,14 . 20 cm . (20 cm + 25 cm)
Lp = 31,4 . 2 cm . (45 cm)
Lp = 62,8 cm . 45 cm
Lp = 2.826 cm²