ANSWER THE FOLLOWING IN SHORT :
(1) We cannot measure the length of an object accurately by using handspan.
hand and footstep. Explain.
Answers
We need standard units for measurement because units such as outstretched palms, cubits, foot lengths and yard lengths vary from person to person. A unit which is acceptable to majority if people as a basic unit of measurement is called a standard unit. Scientists all over the world have accepted a basic set of units for measuring basic quantities that is for the measurement of mass, length, time and temperature, etc.
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Answer:
BECAUSE HANDS OR FEET OF SOME PEOPLE ARE SMALLER THAN US OR SOME ARE BIGGER THAN US
- IF I COUNT A TABLE BY MY HAND AND MAYBE YOUR HAND IS MALLER THAN ME OR BIGGER THAN ME THEN YOU WILL GET DIFFERENT LENGTH AND I WLL GET DIFFERENT LENGHT
SO WE CANNOT MEASURE THE LENGTH BY HANDS OR FEET
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Explanation: