If the diameter of a solid hemisphere is 14 cm, then what will be its total surface area? $( π = \frac{22}{7})$
Answer & explanation
Correct answer: option 1
We know that,
The total surface area of hemisphere = 3πr2
We have,
The diameter of the hemisphere = 14 cm
Radius of hemisphere = \(\frac{14}{2}\) = 7 cm
The total surface area of hemisphere = 3 × π × (7)2 = 3 × \(\frac{22}{7}\)× 49
= 3 × 22 × 7 = 462 cm2