Charlie measured the circle-shaped part of a sun his sister drew on the chalkboard. The circumference of the circle is 69.08 cm. What is the diameter? (Use 3.14 for .)

Answer 1

To find the diameter of the circle, we first need to find the radius using the formula for the circumference of a circle:

Circumference = 2 * π * radius

69.08 = 2 * 3.14 * radius
69.08 = 6.28 * radius
radius = 69.08 / 6.28
radius ≈ 11

Now that we have the radius, we can find the diameter by multiplying the radius by 2:

Diameter = 2 * radius
Diameter = 2 * 11
Diameter = 22

Therefore, the diameter of the circle is 22 cm.