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Question Number 132181 by aurpeyz last updated on 12/Feb/21

Commented by aurpeyz last updated on 12/Feb/21

$$\mathit{n}\mathit{o}10\mathit{p}\mathit{l}\mathit{s}$$

Answered by ajfour last updated on 12/Feb/21

$$\theta =r^3-r$$$$d\theta =(3r^2-1)dr$$$$\Rightarrow △\theta \approx (3\times 1-1)(0.05)$$$$△\theta \approx 0.1$$

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