s = √6² + 9²
s = √64 + 81
s = √117 = 3√13 dm
Lp = πr(r + s)
Lp = 3,14 × 6 dm × (6 dm + 3√13 dm)
Lp = 18,84 dm × 3(2 + √13) dm
Lp = 56,52(2 + √13) dm²
(l) Luas permukaan bola
Lp = 4πr²
Lp = 4 × 3,14 × 8 dm × 8 dm
s = √6² + 9²
s = √64 + 81
s = √117 = 3√13 dm
Lp = πr(r + s)
Lp = 3,14 × 6 dm × (6 dm + 3√13 dm)
Lp = 18,84 dm × 3(2 + √13) dm
Lp = 56,52(2 + √13) dm²
(l) Luas permukaan bola
Lp = 4πr²
Lp = 4 × 3,14 × 8 dm × 8 dm
Editor: Moch. Kharisson Abdillah
Sumber: Buku Kemdikbud