G You are blowing air into a spherical balloon at a rate of 33 cubic inches per second. Given that the radius of the balloon is 22 inches when t=4t=4 seconds answer the following questions: (a) How fast is the radius of the balloon growing at t=4t=4 seconds

Explanation:

We are given that

r=2 in when t=4 s

We have to find the rate of change of radius.

We know that

Volume of sphere=

Differentiate w.r.t t

Substitute the values

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

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explanation: