Question

hat's the circumference of a circle with a diameter of 45 centimeters? A. 141.4 centimeters B. 6,361.7 centimeters C. 282.7 centimeters D. 70.7 centimeters

Answer 1

By definition, the circumference of a circle is given by:

$C = \pi * d$

Where "d" represents the diameter of the circle.

Then, replacing:

$C = \pi * 45cm\\C = 141.3716694cm\\C = 141.4cm$

Thus, the circumference of the circle of diameter 45cm, is given by:

$C = 141.4cm$

Answer:

Option A