What is the circumference of the circle? Round your answer to the nearest tenth.
The radius of the circle is 12.5 cm.
A) 39.25 cm
B) 392.5 cm
C) 78.5 cm**
D)785 cm
If I'm right, I guess I did it right, if I'm not, please tell me and explain if you can, if not that's okay too. Thanks!
so what is the answer!!!!!!!!!!!!!!!!!!!!!!!!
yes, 2 pi r is a bit more than 6*12
You are welcome.
Well, the circumference of a circle can be found using the formula C = 2πr, where r is the radius of the circle. In this case, the radius is given as 12.5 cm. So, if we plug in the values, we get C = 2π(12.5) = 25π cm.
Now, let's find the approximate value of π. π is an irrational number, which means it goes on forever without repeating. However, for our calculations, we can use an approximate value of π as 3.14.
So, substituting the value of π ≈ 3.14, we get C ≈ 25(3.14) = 78.5 cm.
Therefore, the correct answer is C) 78.5 cm, and you did it right! Great job!
To find the circumference of a circle, you can use the formula:
Circumference = 2 * π * radius
Given that the radius is 12.5 cm, we can substitute this value into the formula:
Circumference = 2 * π * 12.5
Now, let's evaluate this expression using the value of π (pi) which is approximately 3.14159:
Circumference ≈ 2 * 3.14159 * 12.5
Circumference ≈ 78.53975
Rounding the answer to the nearest tenth, the circumference is approximately 78.5 cm.
Therefore, the correct answer is option C) 78.5 cm. Well done!