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A stick is 20cm long.A student makes a 5 percent error in measuring the stick.What are the two possible values for the student's measurement?
Wiki User
∙ 14y ago
5 per cent of 20 is 1. So if the student makes a mistake of exactly 5 per cent then his measurements are 20 +/- 1 cm. That is, 19 or 21 cm.
Wiki User
∙ 14y ago
Olofinsao Oluwanisol...
Lilian Braide
5/100 × 20 = 1cm
20cm+1cm= 21cm
20cm-1cm=19cm
So the two possible measurements are 21cm and 19
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