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Answer: The pupil's area is π mm^2 or 3.14mm^2
Step-by-step explanation:
First of all, the pupil is the name that is given to the hole that is situated in the centre of the Iris of the human eye which allows light to come in contact with the retina. It adjusts in size (diameter) depending on the availability of light in the environment we find ourselves.
In this scenario, Shannon entered the room with unusual lighting and her pupil's diameter adjusted to 2 millimeters.
Now, it is important to note that a pupil is an example of a circle.
The formula for finding or calculating the area of a circle is πr^2, where π = 22/7 and "r" = radius.
Since the radius of her pupil is = 2/2 = 1 millimetre, the area of the pupil is:
πr^2 = π × 1 × 1 = π mm^2
Or 22/7 × 1 × 1
= 3.14mm^2
Therefore the area of her pupil when she entered the room with unusual lighting is 3.14mm^2
Answer:
1 5/16
Step-by-step explanation:
3/4 / 8/14 is the same as
3/4 * 14/8 = 42 /32 1 5/16
Answer:
Randomization allows a sample or small groups with similar characteristics to determine a probability or to hypothesize an event, that is why this type of samples is important in an experiment, that is, to carry it out in a random way.
Step-by-step explanation:
For example;
If a crop at a certain time of year, for example in summer, is affected by a certain fungus, to know if it is really the time of year that affects this problem, random samples of the same crop with the same characteristics and put it to the test at another time of the year to see if the weather is really a risk factor in the spread of this fungus.
Anthony ran 5.5 miles each day after school
Let x represent the amount of mile he covered at the park after school. Since he ran 1.5 miles each day before school, the total distance covered each day is:
Total distance covered each day = Distance ran before school + Distance ran after school
Total distance covered each day = 1.5 + x
Since he ran for 4 days in a week, hence:
Total distance ran in a week = 4 days × (1.5 + x)
Total distance ran in a week = 4x + 6
But at the end of the week he ran 28 miles, hence:
4x + 6 = 28
4x = 22
x = 5.5 miles
Hence Anthony ran 5.5 miles each day after school
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