Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Differential Calculus Applications of Derivatives
The volume of a cube is increasing at the rate of 27 cm3/s. How fast is the surface area increasing when the length of the cube is 12 cm.
1
9 cm2/s
2
9/4 cm2/s
3
4/9 cm2/s
4
More than one of the above
5
None of the above