Question

If the radius of a solid hemisphere is 5 cm, then find its curved surface area and total surface area. ( $\mathrm{\pi }=3.14$ )

Answer 1

Radius of the hemisphere, r = 5 cm

∴ Curved surface area of the hemisphere = 2$\mathrm{\pi }$r² = 2 × 3.14 × (5 cm)² = 157 cm²

Total surface area of the hemisphere = 3$\mathrm{\pi }$r² = 3 × 3.14 × (5 cm)² = 235.5 cm²

Thus, the curved surface area and total surface area of the solid hemisphere is 157 cm² and 235.5 cm², respectively.