A decimal number is simply a way of representing a number in such a way that the place value of each digit is ten times that of the digit to its right. A decimal representation does not require a decimal point. So, the decimal value is 212 - simple!
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2.12
212 divided by 8 = 53/2 as an improper fraction and 26.5 as a decimal
22.73
There are 30.48 centimetres in one foot. Therefore, rounded to two decimal places, 212 centimetres is equal to 212/30.48 = 6.96 feet.
It would be the value of the decimal increased by 30%.