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moazzamaliaero

Answer

Length measured using Ruler A= 1.17 dm

Length measured using Ruler B=1.18 dm

Step by Step Explanation:

I have added the missing photograph which shows the length of pencil being measured with two rulers.

Ruler A has marking separated by 1 dm

Ruler B has marking separated by 0.1 dm

Length measured using Ruler A= 1.17 dm

(As we can see I have added the middle markers, we can see the tip of pencil is somewhere between 1 and 1.25, it is more than 1.125 but lesser than 1.25, it is somewhere around 1.2 and 1.125 dm, approximately equal to one half of 1.25 which is 1.125 with addition of one of the three halves of half of 1.125 which is 1.125+0.045 dm hence 1.17dm)

Length measured using Ruler B=1.18 dm

(we can see the tip of pencil is just before 1.2 dm, it is clear that the value is precisely 1.18 and not 1.19 dm)

Tip:Always measure one more decimal than given by the ruler when unsure about the exact value

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The answer is "1.2" dm and "1.7" dm.

Its markings on Ruler A are 1 dm apart. We can be assured that the pencil is at least 1 dm since its tip is close to the 1 dm marking on ruler A. But, because Ruler A contains no finer markings, we could say how much longer the pencil is than 1 dm, even tho we know it is shorter.

  • However, because we can see that the pencil is larger than 1 dm, we may calculate its correct length by using our intuition to calculate the length further than the 1 dm mark.
  • On the scaled instrument, we generally include certain digits (i.e., 1 dm) and only one uncertain digit in our measurements (a visual estimate), which in our example can be 0.2 dm.

Therefore, the answer is "1.2 dm".

Ruler B has nine tiny markings separated by 1 dm between the main markings. As a result, the smaller markers are spaced by 0.1 dm. Make a note that the tip of the pencil is definitely after 1 smaller marking past the 1 dm marking.

  • As a result, we know that the pencil's length is at least 1.1 dm. Its precise figures are now 1.1 dm.
  • Nevertheless, we can estimate that the pencil tip is about 7/10th of the way to the 1.2 dm mark on the scale.
  • As a result, the unknown digit in the measurement is 7. As a result, we will record the value as 1.17 dm.

Learn more:

brainly.com/question/4801622

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