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| 1. |
The company decided to increase the outer radius to 4 cm. What will be thevolume? |
| Answer» V=34\u200bπR3−34\u200bπr3volume is constant.⇒dtdV\u200b=0⇒4πR2dtdR\u200b−4πr2dtdr\u200b=0⇒64dtdR\u200b−16(1)=0∴dtdR\u200b=0.25cm/sec | |