CBSE 2025 · Region 7 · Set 1 · Q10 · 1 mark
A spherical ball has a variable diameter $\displaystyle \frac{5}{2}(3 \mathrm{x}+1)$. The rate of change of its volume w.r.t. x , when $\displaystyle \mathrm{x}=1$, is :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle 375 \pi$
Application of DerivativesRate of Change of QuantitiesApplymcqmedium
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CBSE Class 12 Mathematics past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.