Find the volume of a hemisphere whose diameter is 7 cm. (Take π = 22/7) (Rounded up to two decimal places)
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Correct answer: C
Explanation
The correct answer is Option 3 i.e.89.83 cm³ .
Diameter = 7 cm → Radius = 7/2 = 3.5 cm
Volume of hemisphere = (2/3) × π × r³
= (2/3) × (22/7) × (3.5)³
= (2/3) × (22/7) × 42.875
= (2/3) × 22 × 6.125
= (2/3) × 134.75 = 89.83 cm³