icantspeakengles
07.10.2021 •
Mathematics
Find the equation for the line that passes through (-1, -2) and (4,3). Is the point (3, 1) on this line? Be sure to justify your answer. Hint: calculate the slope of the line through the 2 given points by either creating a slope triangle, or by finding the change in y over the change in x.
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Ответ:
c=2pir
15.7=2pir
divide by 2
7.85=pir
divide both sidse by pi
7.85/pi=r
ok so
area=pir^2
area=pi(7.85/pi)^2
area=pi(61.6225/(pi^2))
area=61.6225/pi
use 3.14 for pi
area=61.6225/3.14
area=19.625 square units
Hope it helped <3