6. [-/11.11 Points] DETAILS WANEFMAC7 12.5.012. MY NOTES PRACTICE ANOTHER A rather flimsy spherical balloon is designed to pop at the instant its radius has reached 6 centimeters. Assuming the balloon is filled with helium at a rate of 13 cubic centimeters per second, calculate how fast the radius is growing at the instant it pops. (The volume of a sphere of radius r is V = -ar). Round your answer to two decimal places.) cm/s Need Help? Read It Watch It