Multiple choice

(\text{The volume of a solid hemisphere is numerically equal to its total surface area. Find its diameter.})

  1. 18 units

  2. 9 units

  3. 6 units

  4. 1 unit
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Volume of hemisphere = (2/3)πr³, total surface area = 3πr². Setting them equal: (2/3)πr³ = 3πr² gives (2/3)r = 3, so r = 4.5. Diameter = 2r = 9 units.

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