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Rahul and Sonia were playing with blocks and each of them made a train out of them. Both of them thought of measuring the length of the train using their handspan. By that time Rahul's friend Anupam came and suggested they measure with a measuring tape for a fair result. (a) What is a handspan? (b) Why did Anupam ask both of them to use measuring tape? (c) Why a cubit cannot be used as the standard unit of length?

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Explanation:

(a) The handspan is the distance between the tip of the thumb and tip of the little finger when the hand is fully stretched.

b) It is impossible for them to obtain an accurate result by the use of a handspan because it doesn't use any standard unit for measurement. It is entirely subjective and highly prone to human errors.

c) Anupam  is quite intelligent and active

adefioyelaoye

a) A handspan refers to the actual distance between the tip of the thumb

and tip of the little or last finger when the hand is fully stretched. It is

sometimes used in taking measurements of an object.

b) Anupam ask both of them to use measuring tape because the use of

handspan in taking measurement  because:

  • It lacks the standard readings/markings which a measuring tape has as individuals don't have a uniform handspan.
  • This therefore results to the measurements taken being inaccurate and error prone.

c) Cubit can't be used as a standard unit of length because it varies in

individuals and is associated with the different heights present.

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