What is the total surface area of a hemisphere whose diameter is 14√3 ?
1. 1276 cm2
2. 1386 cm2
3. 1496 cm2
4. 1606 cm2
1. 1276 cm2
2. 1386 cm2
3. 1496 cm2
4. 1606 cm2
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Correct Answer – Option 2 : 1386 cm2
Given :-
Diameter = 14√3
Concept :-
Radius = Diameter/2
Total surface area of sphere = 3πR2
Where, π = (22/7)
Calculation :-
⇒ Radius = (14√3)/2 = 7√3
⇒ Total surface area = 3 × (22/7) × (7√3)2
⇒ Total surface area = 1386 cm2
∴ Total surface area = 1386 cm2