Kunci Jawaban Matematika Kelas 9 SMP Halaman 303,304,305 Latihan 5.3 Esai No 1-5 Semester 2

r = ¹/₂ × d r

= ¹/₂ × 10 cm r = 5 cm

Hitung luas permukaan bola (L) :

L = 4πr²

= 4 × 3,14 × (5 cm)²

= 4 × 3,14 × 25 cm²

= 314 cm²

Hitung Volume bola (V)  

V = ⁴/₃ πr³

= ⁴/₃ × 3,14 × (5 cm)³