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The company decided to increase the …

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The company decided to increase the outer radius to 4 cm. What will be the volume?

    • Posted by Dinesh Raja 3 years, 7 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Ananya Tiwari 3 years, 7 months ago

    V=34​πR3−34​πr3 volume is constant. ⇒dtdV​=0 ⇒4πR2dtdR​−4πr2dtdr​=0 ⇒64dtdR​−16(1)=0 ∴dtdR​=0.25cm/sec

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