The formula for the circumference of circe with radius r is,
[tex]C=2\pi r[/tex]
A)
Determine the circumference of circle with radius 4 meters.
[tex]\begin{gathered} C=2\pi\cdot4 \\ =2\cdot3.14\cdot4 \\ =25.12 \end{gathered}[/tex]
B)
Determine the circumference of circle with diameter 7 m.
[tex]\begin{gathered} C=2\pi\cdot\frac{7}{2} \\ =2\cdot3.14\cdot3.5 \\ =21.98 \end{gathered}[/tex]
C)
The circumference of the circle is 24 m.
D)
Determine the circumference of circle in decimal.
[tex]\begin{gathered} C=5\pi \\ =5\cdot3.14 \\ =15.7 \end{gathered}[/tex]
The greatest circumference is 25.12. So the greatest circumference is of circle with radius 4 meters.
First option is correct.
