The volume of a cantaloupe is approximated by V= 4/3

4 The volume of a cantaloupe is approximated by V = 31: r3. The radius is growing at the rate of 0.8 cm /week, at a time when the radius is 6.3 cm. How fast is the volume changing at that moment? The volume is changing at a rate of about V (Round to one decimal place as needed.)