Answer:
try be specific when you're setting your question you get there you don't expect answers to questions that are not clarified thank you
Answer: 15 inches wide
Step-by-step explanation:
1575/21=75
75/5=15
You use the volume formula for a sphere, or V=4/3*pi*r³;
so the first balloon (3cm) has a volume of 113.1.
The second balloon (6cm) has a volume of 904.78.
Therefore, you do 904.78-113.1, getting 791.68 cm³