Raman was measuring a length of a string by using a metre scale.that metre scale was worn out between 1 cm and 2 cm marks ,due to over use.she measures the length of the string by keeping its one end at the 3.0 cm mark.if the other end of the string 'reads' 90.8 cm,find the length of the string.
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87.8 cm
The Scale was broken till 2 centimeter so to get the measurement subtract 3 cm
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