Tentukan keliling daerah yang di arsir

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Mapel : Matematika
Tentang : Bangun Datar
Pembahasan :

Diketahui :

- Persegi :
• s = 21 cm

- ½ lingkaran
• d = 21 cm

Ditanya :
- K

KP = 4s
KP = 4 x 21
KP = 84 cm

KL = ½ x π x d
KL = ½ x 22/7 x 21
KL = ½ x 22 x 3
KL = 11 x 3
KL = 33 cm

K Total : 84 + 33
K Total : 117 cm

Jawaban : 117 cm

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