The circumference of a circle is calculated using the formula:
C = 2 * π * r
Given that the radius of the circle is 3 1/2 cm, we convert this into a decimal by adding the whole number and fraction, which gives us 3.5 cm.
C = 2 * π * 3.5
C ≈ 2 * 3.14159 * 3.5
C ≈ 21.99117 cm
Therefore, the circumference of a circle with a radius of 3 1/2 cm is approximately 21.99 cm.
Find the circumference for 3 1/2 cm
1 answer