Plsss help will chose brainliest 100 points
1 answer:
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Answer:
The sample size is
Step-by-step explanation:
From the we are told that
The population proportion is p = 0.90
The margin of error is E = 0.01
From the question we are told the confidence level is 95% , hence the level of significance is
=>
Generally the sample size is mathematically represented as
=>
=>
Answer:
Area of each sector=
Step-by-step explanation:
We are given that
Length of each wooden od that connects the center of the fan to its edge ,r=12 cm
Total number of sectors=18
We have to find the approximate area of each sector.
Area of semi-circle=
Using the formula
Area of fan=
Area of each sector=
Area of each sector=
Where
Area of each sector=