Tentukan luas dan volume bola. jika, diameternya 42 cm. (volume dalam liter) pakai caranya ya?

Bangun Ruang Sisi Lengkung
Bola

d = 42 cm
r = 21 cm

L = 4πr²
L = 4 × 22/7 × 21 cm × 21 cm
L = 88 × 3 cm × 21 cm
L = 5.544 cm²

V = 4/3 × πr³
V = 4/3 × 22/7 × 21 cm × 21 cm × 21 cm
V = 88 × 1 cm × 21 cm × 21 cm
V = 38.808 cm³
V = 38.808 × 1/1.000 dm³
V = 38,808 dm³
V = 38,808 liter