The circumference of a circle is approximately 28.26 cm. Find its diameter and radius
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To find the diameter and radius of a circle given its circumference, you can use the formulas:
Circumference (C) = π times Diameter (D)
Radius (r) = Diameter (D) divided by 2
In this case, we are given the circumference (C) as approximately 28.26 cm.
Using the formula for circumference, we have:
28.26 = π * D
To find the diameter, we can rearrange the formula:
D = 28.26 / π
Now we can calculate the approximate value for the diameter:
D ≈ 28.26 / 3.14 ≈ 9 cm
To find the radius, we divide the diameter by 2:
r = D / 2 = 9 / 2 = 4.5 cm
So, the diameter of the circle is approximately 9 cm, and the radius is approximately 4.5 cm.
c=pi d
28.26 /3.14
d=9.54
r=4.77
C = pi * d
28.26 = 3.14d
28.26 / 3.14 = d
9 = d