Asked by Anonymous
                The shape of a colony of bacteria on a Petri dish is circular. Find the approximate increase in its area if its radius increases from 40 mm to 49 mm.
The estimated change in area is nothing mm2.
            
        The estimated change in area is nothing mm2.
Answers
                    Answered by
            oobleck
            
    A = πr^2
∆A ≈ dr ∆r = 2π*40*(49-40) = 720π
actual change is π(49^2 - 40^2) = 801π
not very close, since ∆r is so big.
    
∆A ≈ dr ∆r = 2π*40*(49-40) = 720π
actual change is π(49^2 - 40^2) = 801π
not very close, since ∆r is so big.
                                                    There are no AI answers yet. The ability to request AI answers is coming soon!
                                            
                Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.