Question

LET'S OBSERVE 1. Sara wants to measure the length of a cloth. She has 10 marbles to measure it. (i) Do you think she can use marbles to measure length? L011 (ii) Do you think this is an accurate way of measurement? Why? (iii) What should she use to measure the length of the cloth?​

Answer 1

Answer:

Here's your answer buddy.

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Explanation:

i) No she will not be able to use the marbles to measure the length unless every marble is of the same length, or she knows the exact length of every marble. Else she'll end up with inaccurate results.

ii) No, this is an inaccurate and non-standard way of measurement. She will definitely end up with wrong results because:

• if the marbles have broken or curved edges.
• if the marbles have unequal lengths and the measure of each marble is not know. (the measuring has to be down using standard instruments).
• it consumes a lot of time and as a guess I don't think a cloth can be measured using only 10 marbles. (speed is a factor besides accuracy).

iii) The best instrument to be used for measuring cloth is a measuring tape.

A measuring tape is flexible ruler and can thus be used to measure size or distance comfortably on a cloth. The linear-measurement markings are standard markings in both centimetres (cm), inches (in), metres (m), feet (ft.) millimetres (mm), which makes it easier to understand the value of measurement that can be used worldwide.

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