Mathematics

Problem

A melting ice sphere has volume decreasing at 150\,cm

^{3}

/min. At the instant its radius is 6\,cm, what is the rate of change of the radius? a)

-\dfrac{25}{18\pi}\text{ cm/min}

\dfrac{25}{24\pi}\text{ cm/min}

-\dfrac{25}{24\pi}\text{ cm/min}

-\dfrac{25}{12\pi}\text{ cm/min}