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The diameter of the circle above is 10 cm. What is the circumference of the circle? (Use = 3.14.)

User Marsu
by
5.2k points

2 Answers

7 votes

Answer:

31.4 cm

Explanation:

Circumference of the circle = 2×π×r

Circumference of the circle= 2×3.14×5

Circumference of the circle = 10×3.14

Circumference of the circle= 31.4cm

User Peter Kjaer
by
5.6k points
2 votes

Answer:


\large\boxed{C\approx31.4\ cm}

Explanation:

The formula of a circumference of a circle:


C=d\pi=2\pi r

d - diameter

r - radius

We have the diameter d = 10cm. Substitute:


C=10\pi\ cm


\pi\approx3.14

Therefore


C\approx10(3.14)=31.4\ cm

User Peter Bengtsson
by
4.7k points