Respuesta :
The correct answer is 4 significant figures.
19.86-0.0113=19.84 so significant figures are 4.
- In any situation, non-zero numbers are important: One of the regulations that is somewhat evident is this one. A measurement decision is what you make when you attempt to measure something using a tool like a ruler, thermometer, etc. and it responds by giving you a number. Only that particular digit (or numeral) will have meaning as part of the total number you acquire as a result of this measurement process.
- Any important number that is followed by a zero is also significant: Another rule whose title is rather clear is this one. The significant digit rule one states that zeros are unimportant. But according to the second rule, every zero that is sandwiched between two significant numbers likewise becomes one of them.
- Zero is a non-significant number that leads: We do feel bad for these leaders who are merely utilised as a sort of placeholder for other numbers because they are usually used as significant figures chemically. Any number of trailing zeros after various numbers is not regarded as a significant digit of any kind and is non-significant.
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