Question: In a circle, if the radius is 10 cm, what is the length of a diameter?
Options:
5 cm
10 cm
20 cm
15 cm
Correct Answer: 20 cm
Solution:
Diameter = 2 * radius = 2 * 10 cm = 20 cm.
In a circle, if the radius is 10 cm, what is the length of a diameter?
Practice Questions
Q1
In a circle, if the radius is 10 cm, what is the length of a diameter?
5 cm
10 cm
20 cm
15 cm
Questions & Step-by-Step Solutions
In a circle, if the radius is 10 cm, what is the length of a diameter?
Step 1: Understand that the radius of a circle is the distance from the center of the circle to any point on its edge.
Step 2: Know that the diameter of a circle is the distance across the circle, passing through the center. It is twice the length of the radius.
Step 3: Since the radius is given as 10 cm, we can find the diameter by using the formula: Diameter = 2 * radius.
Step 4: Substitute the value of the radius into the formula: Diameter = 2 * 10 cm.
Step 5: Calculate the result: Diameter = 20 cm.
Circle Properties – Understanding the relationship between the radius and diameter of a circle, where the diameter is twice the length of the radius.
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