Keliling gabungan:
= Keliling 1/2 Lingkaran + Keliling persegi panjang
= (1/2.2.π.r) + (2(p+l))
= (1/2 × 2 × 22/7 × 7) + (2(21 + 7))
= (2 × 11) + (2(28))
= 22 + 56
= 78 cm
~VVM
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Keliling gabungan:
= Keliling 1/2 Lingkaran + Keliling persegi panjang
= (1/2.2.π.r) + (2(p+l))
= (1/2 × 2 × 22/7 × 7) + (2(21 + 7))
= (2 × 11) + (2(28))
= 22 + 56
= 78 cm
~VVM