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An airforce plane is ascending verticall...

An airforce plane is ascending vertically at the rate of 100 km/h. If the radius of the earth is km, how fast is the area of the earth, visible from the plane, increasing at 3 minutes after it started ascending? Given that the visible area at height is given by

Text Solution

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The correct Answer is:
`(200pi^(3))/((r+5)^(2))km^(2)//h`
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