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crimeas [40]
3 years ago
9

The formula for the area of a circle is a= 2Ïr^2. how does the value for a change when r increases

Mathematics
1 answer:
ivann1987 [24]3 years ago
6 0
The radius is half the diameter of the circle.  If the radius gets larger then the whole circle grows.  When the circle gets larger, the area gets larger too.
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Step-by-step explanation:

We are given the following in the question:

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\dfrac{dr}{dt} = 1\text{ meter per hour}                

The height is decreasing at a rate 4 meter per hour  

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At an instant time t,

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Rate of change of volume is given by:

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Putting all the values we get,

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