Hopefully, this helps you answer the question. You can ignore the Q1 and Q2.
Considering the surface area of the spherical ballon, it will take 7 seconds for the the balloon to fully inflate.
<h3>What is the surface area of a sphere?</h3>
The surface area of a sphere of radius r is given by:

In this problem, the surface area is of
cm², hence the radius in cm is found as follows:





r = 14 cm.
The radius start at 0 cm, inflating at a rate of 2 cm/s, hence it will take 7 seconds for the the balloon to fully inflate, as 14 cm/(2 cm/s) = 7 s.
More can be learned about the surface area of a sphere at brainly.com/question/21207980
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Answer:
11
Step-by-step explanation:
3(1)+8
3(1)=3
3+8 =11
90,000 + 8,000 + 300 + 60 + 4
1. 12/5
2. 24/10
3. 48/20
4. 96/40