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The radius of a circle is increasing at 0.7 cm/s. What is the rate of increase of its circumference?
cbse
class12
modelpaper
2012
sec-q
q6
math
sec-a
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Jan 10, 2013
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thanvigandhi_1
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1
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The radius of a circle is increasing at the rate of $0.7\; cm/s$. What is the rate of increase of its circumference?
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If \( | \overrightarrow a | = \sqrt 3, | \overrightarrow b | = 2 \: and \: \overrightarrow a . \overrightarrow b = 3. \) Find angle between \( \overrightarrow a \: and \: \overrightarrow b \).
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Sand is pouring from a pipe at the rate of \( 12 cm^3/s.\) The falling sand forms a cone on the ground in such a way that the height of the cone is always one-sixth of the radius of the base. How fast is the height of the sand cone increasing when the height is 4 cm?
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Feb 4, 2013
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