6y :))))))))))))))))))))))))))))))))))))))))))
The answer to this question is:
A circle is growing so that the radius is increasing at the rate of 2cm/min. How fast is the area of the circle changing at the instant the radius is 10cm? Include units in your answer.?
✔️I assume here the linear scale is changing at the rato of 5cm/min
✔️dR/dt=5(cm/min) (R - is the radius.... yrs, of the circle (not the side)
✔️The rate of area change would be d(pi*R^2)/dt=2pi*R*dR/dt.
✔️At the instant when R=20cm,this rate would be,
✔️2pi*20*5(cm^2/min)=200pi (cm^2/min) or, almost, 628 (cm^2/min)
Hoped This Helped, <span>Cello10
Your Welcome :) </span>
60t +60 = 80t
subtract 60t from both sides of=
20t = 60
t = 3
The two trains are the same distance from Chicago at 3pm, at that time both trains will have covered 240 miles
Answer:
2.73
Step-by-step explanation:
It is given that Lisa paid 43.95 for 16.1 gallons of gasoline.
So, the cost of 16.1 gallons of gasoline is 43.95.
Hence, the cost of gasoline per gallon is 43.95/16.1 = 2.7304347.
Now, it is required to round this value to the nearest hundredth.
Therefore, the cost of gasoline per gallon rounded to the nearest hundredth is 2.73. (Answer)
