What is the Rate of Change of Area for a Heated Circular Plate?

In summary, when a circular plate of metal with a radius of 54 cm is heated in an oven, its area increases at a rate of 0.04 cm/min. The rate at which the plate's area is increasing is represented by dy/dr and is equal to 0.04 cm/min.
  • #1
Jan Hill
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0

Homework Statement



When a circular plate of metal is heated in an oven, its radius increases at a rate of
0.04 cm/min At what rate is the plate's area increasing when r is 54 cm

Homework Equations





The Attempt at a Solution



let r be the radius

dy/dr = 0.04 cm/min

but where to go from here?
 
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  • #2
Hi Jan! :wink:
Jan Hill said:
When a circular plate of metal is heated in an oven, its radius increases at a rate of
0.04 cm/min At what rate is the plate's area increasing when r is 54 cm

let r be the radius

dy/dr = 0.04 cm/min

but where to go from here?

(what's y ? :confused:)

That isn't dy/dr, it's dr/dt. :smile:
 

1. What is the rate of change of area?

The rate of change of area refers to how quickly the area of a given shape is changing over a specific period of time. It is a measure of the change in size or extent of the shape over time.

2. How is the rate of change of area calculated?

The rate of change of area can be calculated by finding the derivative of the area function with respect to time. This can be done using calculus, specifically the chain rule, to find the instantaneous rate of change at a specific point in time.

3. What factors can affect the rate of change of area?

The rate of change of area can be affected by various factors such as the shape of the object, the material it is made of, and external forces acting upon it. For example, a rubber band will have a different rate of change of area when stretched compared to a metal spring.

4. Why is the rate of change of area important?

The rate of change of area is important in many fields of science and engineering. It can help us understand the growth or decay of natural phenomena, the behavior of materials under stress, and the efficiency of processes involving changing areas such as heat transfer.

5. How can the rate of change of area be applied in real life?

The concept of rate of change of area has many practical applications, such as in construction and architecture, where it is used to determine the amount of materials needed for a project. It is also used in fields like biology and ecology to study the growth and development of organisms. In economics, the rate of change of area is used to calculate the rate of change of production or consumption over time.

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