Answer:
circumference: 12.56 cm
area: 12.56 cm^2
Step-by-step explanation:
1. The formula to find the circumference of a circle is [tex]2\pi r[/tex] or [tex]\pi d[/tex]. In this case, pi is approximated to 3.14, and the diameter is 4.
- [tex]3.14 * 4[/tex]
- [tex]12.56[/tex]
Therefore, the circumference is 12.56 cm.
2. The formula to find the area of a circle is [tex]\pi r^2[/tex], and in this case, pi is approximated to 3.14. Also, the radius is half the diameter: 4/2 = 2.
- [tex]3.14 * 2^2[/tex]
- [tex]3.14 * 4[/tex]
- [tex]12.56[/tex]
Therefore, the area is 12.56 cm^2.
