Tolong bantu jawab plissss bentar lagi dikirim nanti gw kasih bintang 5 ⭐ sama gw follow
Soal 1 (s = 2 × 14 = 28 cm) , (r = 14 cm)
Luas daerah yang diarsir
L = L. persegi – L. 1/2 Lingkaran
L = (s × s) – (1/2 × π ÷ r²)
L = (28 × 28) – (1/2 × 22/7 × 14²)
L = 784 cm² – (11/7 × 196)
L = 784 cm² – (11 × 28)
L = 784 cm² – 308 cm²
L = 476 cm²
Soal 2 (s = 2 × 7 = 14 cm) , (r = 7 cm)
L = L. persegi – L. 1/2 Lingkaran
L = (s × s) – (1/2 × π ÷ r²)
L = (14 × 14) – (1/2 × 22/7 × 7²)
L = 196 cm² – (11/7 × 49)
L = 196 cm² – (11 × 7)
L = 196 cm² – 77 cm²
L = 119 cm²