Answer:
The rounded number is 10,000.
Step-by-step explanation:
Rounding means making a number simpler but keeping its value close to what it was.
The digit in the ten thousands place is 1.
The digit to its right is 2, so the digit in the ten thousands place stays the same.
Leave it the same if the next digit is less than 5, this is called rounding down. And increase it by 1 if the next digit is 5 or more, this is called rounding up
Answer:
Step-by-step explanation:
The rate of change in the temperature T of coffee at time t is written as 
(remember derivatives are used to express rates of change, and in our case the rate of change of the temperature T). The difference between the temperature M of the air at time t, and the temperature T of the coffee at time t can be expressed as 
Saying that the rate of change in the temperature T is proportional to the difference between M and T is just a way of saying that the rate of change in the temperature T is equal to the difference between M and T, multiplied by some constant k (whose value we don't know, but still that's what it means).
Therefore we get
Radius= 7cm
Base area= 49pi
Volume= 49pi*4= 196pi=615.75cm^3
