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Mathematics · 2024 · 1 mark
CBSE 2024 · Region 3 · Set 1 · Q5
If the sides of a square are decreasing at the rate of 1.5 cm / s, the rate of decrease of its perimeter is:
If the sides of a square are decreasing at the rate of $\displaystyle 1.5 \mathrm{~cm} / \mathrm{s}$, the rate of decrease of its perimeter is :
Official answer
(B)
$\displaystyle 6 \mathrm{~cm} / \mathrm{s}$
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