Find the diameter of the circle if the circumference is 23.55 cm.

From the condition, we know that the circumference is 23.55 centimeters, and we need to find the diameter of this circle.
Let’s start by remembering the formula for calculating the circumference:
C = 2 * pi * R.
In this formula, C is the circumference, R is the radius of the circle, and we will take the value of pi to the nearest hundredths = 3.14.
Let us express the radius from the formula:
R = C / (2 * pi);
R = 23.55 / (2 * 3.14) = 23.55 / 6.28 = 3.75 cm.
We just have to calculate the diameter:
D = 2R = 3.75 * 2 = 7.5 cm.
Answer: 7.5 cm.