the radius of circle is increasing at the rate of 0.7cm/sec.what is the rate of its circumference
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since the radius of circle increase by the rate of 0.7 cm / sec.. then the rate of circumference will increase by rate = 2 × π x rate of Radius = 2 x 3.14 x 0.7 = 4.398cm/ sec
could be explained more complicated......
circumference = C = 2π x R
differentiating with respect to time.. ( another term for "rate of")
dc/dt = d ( 2πr)/ dt
dc/dt = 2π x (dr/dt) constant = 2Π
= 2 x 3.14 x 0.7 dr/dt = 0.7
= 4.398
could be explained more complicated......
circumference = C = 2π x R
differentiating with respect to time.. ( another term for "rate of")
dc/dt = d ( 2πr)/ dt
dc/dt = 2π x (dr/dt) constant = 2Π
= 2 x 3.14 x 0.7 dr/dt = 0.7
= 4.398
supriya55:
dr/dt=0.7cm/sec, circumference(c)=2πr,dc/dt=2π(0.7)=1.4πcm/sec
this is the answer i got it
aand thanku to help me
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