Q. 64.3( 3 Votes )
The radius of an air bubble is increasing at the rate of 0.5 centimetre per second. At what rate is the volume of the bubble increasing when the radius is 1 centimetre?
Answer :
Soap bubble will be in the shape of a sphere
Let the radius of the soap bubble be r
Volume of the soap bubble=
Rate of change of Volume
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PREVIOUSThe radius of a circular soap bubble is increasing at the rate of 0.2 cm/s. Find the rate of increase of its surface area when the radius is 7 cm.NEXTThe volume of a spherical balloon is increasing at the rate of 25 cubic centimetres per second. Find the rate of change of its surface at the instant when its radius is 5 cm.
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