bantuin dong no 23-24 sama caranya ya

23.
Keliling Gabungan :
K = 28 + 15 + 15 + 25 + 25 + ½πd
K = 108 + ½ × 22/7 × 28
K = 108 + ½ × 22 × 4
K = 108 + ½ × 88
K = 108 + 44
K = 152 cm

Jawaban : D. 152

24.
Luas ½ Lingkaran :
L = ½ × πr²
L = ½ × 22/7 × (14/2) × (14/2)
L = ½ × 22/7 × 7 × 7
L = ½ × 154
L = 77 m²

Harga :
Rp.80.000/m² × 77 m²
= Rp.6.160.000

Maaf Kalau Salah

Jawabannya:
23. k.gabungan
k= 28+15+15+25+25+1/2Πd
= 108+1/2.22/7.28
= 108+1/2.22.4
= 108+1/2.88
= 108+44
= 152 cm. ----- D

# 24 Krg tau saya

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