CUET Preparation Today
CUET
-- Mathematics - Section B1
Three-dimensional Geometry
The rate of change (in cm2/s) of the total surface area of a hemisphere with respect to radius r at $r=\sqrt[3]{1.331}$ cm is:
$66 \pi$
$6.6 \pi$
$3.3 \pi$
$4.4 \pi$
The correct answer is Option (2) → $6.6 \pi$
