Hello. You did not add the graphics to which this question refers, which makes it impossible for your question to be answered. However, I created a model chart that represents the situation shown in the question and that can help you. This chart is attached in the figure below.
Notice, in the graph that the more students attended more character education classes, the greater their acts of foolishness. On the other hand, these acts tend to decrease as students have attended less classes, reaching a very low result for students who have not attended any class of this type of education.
So use half the surface area formula: SA=2πr^2 and plug in what you already know
since you don't know the radius yet, solve for it using the circumference
C=2πr
514.96=3.14(2)r
82=r
SA=2π(82)^2
SA=6.28(6724)
SA=42,226.72
so your answer is 42,226.72 yards squared
Answer: an informal, public voice
Answer
B. Spell checker
Explanation
Spell checker is a program designed to identify misspelled words and notify the writer about the mistake. The programs can further auto correct the word or allow the writer to choose from various corrections of the word. In Microsoft, a red underline appears on the misspelled word to display the error.