13) A balloon, which always remains spherical, has a variable diameter Find the rate of change of its volume with respect to x.
Volume of sphere(V) = Diameter = So, radius(r) =
CBSE Class 12 board exams 2025 to have 50% competency-based questions; no change in 10th
CBSE Class 12 board exams 2024 over; expected result date, trends of last 10 years
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