Answer:
132 cm
Step-by-step explanation:
The diameter of the circle is 42 cm. A circle's radius is half of its diameter, hence, its radius is:
42 / 2 = 21 cm
The circumference of a circle is the total length of the circle and it is given as:
[tex]C = 2\pi r[/tex]
where [tex]\pi = \frac {22} {7}[/tex]
r = radius of the circle
Hence, the circumference of the circle is:
[tex]C = 2 * \pi * 21\\C = 132 cm[/tex]
