Answer:
The rate of change of the volume of the cylinder at that instant = 
Step-by-step explanation:
Given:
Rate of increase of base of radius of base of cylinder = 7 mm/hr
Height of cylinder = 1.5 mm
Radius at a certain instant = 12 mm
To find rate of change of volume of cylinder at that instant.
Solution:
Let 
represent radius of base of cylinder at any instant.
Rate of increase of base of radius of base of cylinder can be given as:
Volume of cylinder is given by:
Finding derivative of the Volume with respect to time.
Plugging in the values given:
Using 
(Answer)
Thus rate of change of the volume of the cylinder at that instant =
I think you might have forgotten to add Suresh typing speed table....
Time (min) Total words
0.5 28
3 168
14 784
We can easily obtain Suresh typing speed by dividing Total Words/Time
Time (min) Total words Speed (Words/min)
0.5 28 56
3 168 56
14 784 56
And we know that Nancie's typing speed is 35 Words/ min
So, Nancie's rate is less than Suresh's/
The answer is 17.5 miles because, it depends if the family uses more or less gallons of gas. The Millers must've driven for 26.25 miles using 4 gallons of gas!!! Hpe this helps!!!
From what my calculator said, Radical 7 is 2.6457511311064591 (why not m8) and obviously 2.65 is not bigger than 3.5 or 3.444
