Question

39,
If radius of a spherical bubble starts to increase
with time tas r=0.5t. What is the rate of change
of volume of the bubble with time t = 4s ?
(1) 8r units/s (2) 41 units/s
(3) 21 units/s (4) n units/s​

Answer 1

Answer:

8r unit /s is correct may be