Question

The diameter of a circle is 18 centimeters. What is the circle's circumference?

Answer 1

Circumference ≈ 56.55

Explanation:

Given:

• Diameter = 18 cm

To Find:

• The circumference of the circle

Solution:

Here we'll use the formula of finding the circumference,i.e :

`\boxed{\rm \: C = πd}`

• Here, d = diameter
• The value of π is not given, so let us take π = 3.14
• C = circumference

Substitute them onto the formula:

• d = 18 cm
• π = 3.14

`\rm C = \pi(18) \: cm`

`\rm C = 3.14 * 18 \: cm`

`\boxed{\rm C \approx \: 56.55}`

Hence, the circumference of the circle is 56.55(approx).