CBSE 2024 · Region 3 · Set 3 · Q11 · 1 mark
The rate of change of surface area of a sphere with respect to its radius ' $\displaystyle r$ ', when $\displaystyle r=4 \mathrm{~cm}$, is :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle 32 \pi \mathrm{~cm}^{2} / \mathrm{cm}$
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CBSE Class 12 Mathematics past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.