scientist discover a new bacteria which is
approximately of shape of sphere, and its size
increase with time as following mathematical
relationship d=7.0(t-1)nanometre fort 21
where (d is diameter and t is time in second ) its life
span is approximately 50 second(assume after
50second its diameter become zero)? At t=1second
it has zero diameter.
After some time its
surface area is measured and found to
be 2461.76 what is possible time?
A)
5sec
B)
10.1sec
C)
8.4sec.
D)
2.5sec
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