1) Diameter = 56 cm

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Luas =
Keliling =
2) jari jari = 7 cm
Keliling =
Luas=
3) diameter = 80 cm
Keliling =
Luas =
4) jari jari = 15 cm
Keliling =
Luas =
5) diameter = 90 cm
Keliling =
Luas =

1) Diameter = 56 cm

2. 144

cara
7 x 7 x 14/7