Question 15
Four children measure the length of a table which was about 2 m. Each of them used different ways to measure it.
(i) Sam measured it with a half metre long thread.
(ii) Gurmeet measured it with a 15 cm scale from her geometry box.
(iii) Reena measured it using her hand span.
(iv) Salim measured it using a 5 m long measuring tape.
Which one of them would get the most accurate length? Give reason for your answer.
Question 15
Four children measure the length of a table which was about 2 m. Each of them used different ways to measure it.
(i) Sam measured it with a half metre long thread.
(ii) Gurmeet measured it with a 15 cm scale from her geometry box.
(iii) Reena measured it using her hand span.
(iv) Salim measured it using a 5 m long measuring tape.
Which one of them would get the most accurate length? Give reason for your answer.
Salim would get the most accurate length. This is because, in this case, the length of the table can be measured in single go because the measuring tape is longer than the table. In other cases, the chance of making an error is higher due to multiple measurements. In case of Sam, he can only measure the lengths which are exact multiples of half meter.
Salim would get the most accurate length. This is because, in this case, the length of the table can be measured in single go because the measuring tape is longer than the table. In other cases, the chance of making an error is higher due to multiple measurements. In case of Sam, he can only measure the lengths which are exact multiples of half meter.
