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Mathematics · 2026 · 1 mark
CBSE 2026 · Region 4 · Set 1 · Q13
Three tennis balls are just packed in a cylindrical jar. If radius of each ball is r, volume of air inside the jar is
Official answer
From CBSE’s own marking scheme for this paper.
(A)
$\displaystyle 2 \pi \mathrm{r}^{3}$
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CBSE Class 10 Mathematics past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.