tolong dijawab besok dikumpulin tolong dijawab. 2=a-d

a.luas=22/7×28×28
=2.464 cm²
keliling=2×22/7×28
=2×88
=176 cm²

b.luas=22/7×35×35
=3.850 cm²
keliling=2×22/7×35
=2×110
=220 cm²

c.luas=3,14×50×50
=7.850 cm²
keliling=2×3,14×50
=2×157
=314 cm²

d.luas=22/7×70×70
=15.400 cm²
keliling=2×22/7×70
=2×220
=440 cm²


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