Question
The volume of a sphere is 288π cm³. What will be its
surface area?Solution
ATQ,
Volume of sphere = (4/3) × π × r³
[Where ‘r’ is the radius]
So, 288π = (4/3) × π × r³
Or, r³ = 216
Or, r = 6 cm
Area of sphere = 4 × π × r² = 4 × π × 6 × 6 = 144π cm²
The mean proportion of 289 and 144 is:
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