The diameter of a solid hemisphere is 10 cm. Find its total surface area (use π = 3.14).
Answer & explanation
Correct answer: option 3
We know that,
Total surface area of hemisphere = 3πr2
Diameter of solid hemisphere = 10 cm.
Then radius = 5cm
Total surface area of hemisphere,
= 3 × (3.14) × 52
= 3 × (3.14) × 25 = 235.5 cm2