A uniform metallic solid sphere is heated uniformly. Due to thermal expansion, its radius increases at the rate of 0.05 mm/second. Find its rate of change of volume with respect to time when its radius becomes 10 mm. (take p = 3.14)
Text Solution
Verified by ExpertsThe correct answer is:
B
vol = 
π r 3
= 4 π r 2 
= 4 π × (10) 2 × 0.05 = 20 π = 62.8 
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