the length of a rectangular prism is increasing at a rate of 8 cm/s, its width is increasing at a rate of 3 cm/s, and its height is increasing at a rate of 5 cm/s. when the length is 20 cm, width is 10 cm, and height is 15 cm, how fast is the volume of the rectangular prism increasing?

Answer 1

V = lwh
dV/dt = lw dh/dt + lh dw/dt + wh dl/dt
you are given all the values, just plug in and evaluate