If the total surf

Let the radius of solid sphere be r cm

Total surface area of solid hemisphere = 3πr²

Given, total surface area of solid hemisphere = 462 cm²

∴ 3πr² = 462 cm²

⇒ 3 × 22/7 × r² = 462 cm²

⇒ r² = 462 × 1/3 × 7/22 cm² = 49 cm²

⇒ r = 7 cm