Answer:
It has 3 significant figures
Explanation:
Numbers after decimal are significant figures and zero before decimal is not a significant number.
Hence significant figures are 1,1&5
At the number 0.115: the significant numbers are 3, namely 1.1 and 5
Significant numbers are numbers obtained from the measurement results consisting of exact numbers and the last number estimated
In scientific notation, all numbers displayed before the big order are called significant numbers
Scientific notation can be described as:
a, ... x 10ⁿ
a, ... called an significant number
10ⁿ called a big order
Rules for significant numbers in general:
1. all non-zero numbers are significant numbers
2. a zero which is located between two non-zero numbers including a significant number
3. all zeros located in the final row written behind the decimal point include important numbers
4. zero as a decimal point is not an important number
We must be able to distinguish between the significant number and the exact number. The significance number is obtained from the measurement results while the exact number comes from the numerical activity
It is known in question number 0.115:
0 in front of commas is not an significant number because it is only a decimal point
So the significant figure is 3, namely 1.1 and 5
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