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Sagot :

msm555

B.25.12 units

Answer:

Solution given:

one point[tex](x_1,y_1)[/tex]=(-4,0)

another point [tex](x_2,y_2)=(4,0)[/tex]

Since distance between them is diameter.

so

d=[tex]\sqrt{(x_2-x_1)²+(y_2-y_1)²}[/tex]

=[tex]\sqrt{(4+4)²+(0-0)²}[/tex]

=8 units

now

radius is half of diameter so

radius =d/2=8/2=4 units

now

Circumference of circle =2πr=2*3.14*4=25.12 units

Diameter

  • |-4-4|
  • |-8|
  • 8units

Radius

  • 8/2
  • 4units

Circumference

  • 2πr
  • 2π(4)
  • 25.12units