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# Accuracy and error watch

1. What is 132 correct to 3 significant figures?
2. It’s 132... 3 significant figures is 3 numbers
3. 132
130 if 2 s.f
100 if 1s.f

take the next number and round it
4. (Original post by Lord Nutter)
132
130 if 2 s.f
100 if 1s.f

take the next number and round it
The question says 'The area of a circle is given at 132cm, correct to 3 significant figures. Find the radius of the circle to an appropriate degree of accuracy...' and the LB is 6.46... and the UB is 6.49... I know how to calculate it, but not what value to put in to get these two bounds.
5. (Original post by BT144)
The question says 'The area of a circle is given at 132cm, correct to 3 significant figures. Find the radius of the circle to an appropriate degree of accuracy...' and the LB is 6.46... and the UB is 6.49... I know how to calculate it, but not what value to put in to get these two bounds.
The LB of 132 to 3 s.f would be 131.5 and the UB would be 132.5! I hope this helps you answer the question

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