If area of bolt is given by (3 t^ 2 +7 ) cm ^ 2 then find the rate of increase of area at…
Physics · NEET · NTA Exams — Basic Mathematics for Physics
If area of bolt is given by \(\left(3 t^{2}+7\right) \mathrm{cm}^{2}\) then find the rate of increase of area at t = 5 seconds.
- 20 cm2/sec
- 30 cm2/sec
- 45 cm2/sec
- 50 cm2/sec
Answer
(B) 30 cm 2 /sec
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