Question

SOLVE ALL QUESTIONS. I WILL GIVE YOU THE BRAINLIEST ANSWER
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q1. express 486 mm in cm, giving your answer correct to nearest cm.
Q2. Express 31.6824 correct to 3 significant figures.
Q3. Express correct to one significant figure, the value of 84.3/0.0418

Q4. Estimate correct to 2 significant figures, the value of 30.02*19.99-78.23

Answer 1

1. 486mm=48.6cm

2. 31.682

3. 2016.746

4. 521.870

Answer 2

1 Ans :- 1mm= 0.1cm
486mm = 48.6cm
And what is meant by one significant figure??