Question

A circle has a diameter of 10 mm . What is its circumference?

Use 3.14 for π , and do not round your answer. Be sure to include the correct unit in your answer.

Answer 1

The circumference of a circle can be found using the formula:

C = πd

where C is the circumference and d is the diameter.

Substituting the given value of diameter d = 10 mm and π = 3.14, we get:

C = 3.14 x 10 mm
C = 31.4 mm

Therefore, the circumference of the circle with a diameter of 10 mm is 31.4 mm.

Answer 2

Circumference of a circle of radius r : C = 2 x pi x r. The diameter is d = 2 x r hence C = pi x d = pi x 10. We thus get C = 31.4 mm