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Hi can anyone help me with Q3 d pls? I don't know if I'm doing the right thing. And I don't know where I got wrong.ImageUploadedByStudent Room1462310701.771203.jpgImageUploadedByStudent Room1462310709.998942.jpg


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Original post by 123321123
Hi can anyone help me with Q3 d pls? I don't know if I'm doing the right thing. And I don't know where I got wrong.ImageUploadedByStudent Room1462310701.771203.jpgImageUploadedByStudent Room1462310709.998942.jpg


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Nowhere.

I did it via a different method and got 1570\displaystyle\frac{1}{5}\sqrt{70} which is what your answer works out to.

Book is in error.

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