Question

related rates problem...if someone could just explain how to do the first one i can do the rest

***posting pic

Answer 1

If \(A = x^{2}\), and it is assumed that all variables constitute functions of 't', you must think a lot about the chain rule.

\(\dfrac{dA}{dt} = 2x\dfrac{dx}{dt}\)

Do you see the chain rule in there working for us?

Answer 2

ohh i got you thank you. answer is 60

Answer 3

Don't forget the units! Good work.

Answer 4

Thanks to you!