Answer:
7854 square centimeters
Step-by-step explanation:
The area of a circle is given by
A = pi r^2
A = pi ( 50)^2
A = 2500 pi
Let pi be approximated by 3.14
A = 2500 * 3.14
A =7850 cm^2
The first one is -4 and the second one is 6.
Answer: Simplify 8/10 which is 4/5.
Step-by-step explanation:
The percentage that the number of airlines with an average airplane age of 14 is less than the number of airlines with an average airplane age of 11 is:
B. 20%.
<h3>What is a percentage?</h3>
The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:

The percentage of airlines with an average age of 14 years is:

The percentage of airlines with an average age of 11 years is:

The difference is:
33.33% - 13.33% = 20%.
Hence option B is correct.
More can be learned about percentages at brainly.com/question/10491646
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