The diameter of a human hair is given as 0.0185 mm. Write this diameter correct to...

Question

Question

The diameter of a human hair is given as 0.0185 mm. Write this diameter correct to : 2 d.p. 2 s.f.

Answer 1

Answer #1

Ans :-

The diameter of a human hair = .0185 mm

2 D.P :- (Decimal places)

3rd d.p is 8 >= 5 so 1 Rounds up to 2 0.02 (2 d.p)

(0.0185 is closer to 0.02 than 0.01)

2 S.F :- (Significant Figures)

3rd s.f is 5 >= 5 so 8 Rounds up to 9 0.019 (2 s.f)

(0.0185 is midway between 0.018 and 0.019 but we round up in this case.)

Answer 2

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