The diameter of a circle is 8 m. find the circumference to the nearest tenth
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Area = πr²
r - radius
r = d/2 = 8/2 =4
Area = 4²π = 16π
Ao what you have to do is use the equation, C=p*d. Plug in 3.14 for pi and then plug in 8 for the diameter. Leaving you with the answer 25.1 cm
The formula for the circumference of a circle is Area = pi * radius squared. So if the diameter is 8, then the radius is half of that, so it's 4. Now we square 4 and we get 16. Then multiply that by pi so we get 16 * pi = 50.26548. The tenth is the first # behind the decimal point, so your answer is 50.3. I hope this helped! 🙂
C = π(d)
Circumference = π (Diameter)
C = π (8)
rounded = 25.1
To solve for circumference is pretty simple. Just use the equation 2pi r (r=radius, radius is diameter divided by 2).
So essentially, apply to your calculator:
pretty simple! hope this helps!
25.13 or 8 × pi
diameter × pi = circumference
The formula for the circumference of a circle is:
Since we have the diameter, I'm just going to use that. You can also use 4 as the radius, since half of the diameter is the radius.
Rounded to the nearest tenth:
= 25.1 units
formula for circumference of a circle=
C=2πr, r= radius
the radius is the diameter divided by 2
plug into formula
multiply 2 and 4
Circumference is 3 times the diameter so 8 times 3= 24 to the nearest tenth is 20 because 4 or less let it rest.
im pretty sure?