Question

The diagram below shows the radius of the circular opening of a drinking cup.

Answer 1

Answer:

25 cm

Step-by-step explanation:

$C=2\pi r$ where r is the radius of the circle

Plug in the given radius (4 cm)

$C=2\pi (4)\\C=8\pi\\C=25$

Therefore, the circumference of the opening is approximately 25 cm.

I hope this helps!