[tex] Keliling \: \frac{3}{4} \: lingkaran \\ \\ \frac{47}{7} \times r \\ \\ \frac{47}{7} \times 28 \: cm \\ \\ 188 \: cm[/tex]
K = 3/4(2πr + (r + r)
= (3/4(2(22/7(28 + (28 + 28)
= (3/4(2(22(28/7 + (56)
= (3/4(2(22(4) + 56)
= (3/4(44(4) + 56)
= (3/4(176) + 56)
= (528/4) + 56)
= (132 + 56)
= 188 cm
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[tex] Keliling \: \frac{3}{4} \: lingkaran \\ \\ \frac{47}{7} \times r \\ \\ \frac{47}{7} \times 28 \: cm \\ \\ 188 \: cm[/tex]
K = 3/4(2πr + (r + r)
= (3/4(2(22/7(28 + (28 + 28)
= (3/4(2(22(28/7 + (56)
= (3/4(2(22(4) + 56)
= (3/4(44(4) + 56)
= (3/4(176) + 56)
= (528/4) + 56)
= (132 + 56)
= 188 cm