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: 4×2,1= 8,4m
keliling lingkaran ¼ kecil:
=2×¼×2×22/7×0,7
=4,4m
keliling lingkaran ¼ besar:
=2×¼×2×22/7×1,4
=8,8m
keliling arsiran: keliling persegi - (keliling lingkaran ¼ kecil + keliling lingkaran ¼ besar)
= 8,4 m - (4,4 m + 8,8 m)
= 4,8 m
kalo salah minta maaf