Calculator questions help

 

Can anyone help with the above 3 questions I've gone through them, it's telling me that my answer is only partly right and I don't know where I'm going wrong any help would be greatly received thank you

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1 Answer

(a) I suspect that you calculated correctly and got 5948.7804878048... But the required answer is rounded to the nearest one (unit), which would give 5949.

(b) √(63-34)+39=√29+39=44.3851... which rounds to 44.39.

(c) 10.0741... to 3 significant figures is 10.1.

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