61497
24.06.2020 •
Mathematics
The midpoint of the coordinates (7,9) and (12,11) is .
A. (9.5, 10)
B. (13, 12)
C. (19, 20)
D. none of the above
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Ответ:
The answer is option a.
Step-by-step explanation:
=(7+12/2 , 9+11/2)
=(19/2, 20/2)
= ( 9.5 , 10)
Hope this helps.
Ответ:
The area of a circle can be calculated by using the formula:
A = πr²
Step-by-step explanation:
I'm assuming that you are asking about how to calculate the area of a circle, so this formula would be it, where the symbol 'π' is pi, a number which never ends, but in calculations is typically rounded to 3.14. However, on your calculator you may have a button which you can press to find the area of a circle that way.