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...Related rate problems if a variable y is function of time t then the change with respect to given by dy dt several variables are functions and can be an equation we obtain relation involving their rates finding derivatives applying chain rule problem that presents situation whereby one or more quantities changing asks for at which key step in solving such involves writing relates steps involved may outlined as follows read carefully ensuring you fully understand it draw diagram possible introduce appropriate notation assign symbols all express information required terms write various necessary use geometric concepts eliminate substitution differentiate both sides substitute into resulting solve unknown examples oil spill from tanker spreads out circular pattern centered s position perimeter moving outwards m find increase contaminated area when radius spherical snowball melting way its volume decreasing cm min what water tank built shape cone height diameter top being poured level risi...