Question
Download Solution PDFThe total surface area of a solid hemisphere of diameter 28 cm is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
The diameter of the solid hemisphere (d) = 28 cm
Formula used:
The total surface area of a solid hemisphere = 3πr2
Where, r = radius
Calculation:
Radius (r) = d/2 = 28/2 = 14 cm
Total surface area = 3πr2
⇒ Total surface area = 3 × π × 142
⇒ Total surface area = 3 × 22/7 × 14 × 14
⇒ Total surface area = 3 × 22 × 2 × 14
⇒ Total surface area = 3 × 22 × 28
⇒ Total surface area = 1848 cm2
∴ The correct answer is option (3).
Last updated on May 28, 2025
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