The diameter of a quarter is 2.5 cm. What is it’s circumference?

Question

asked Jun 28, 2021 122k views

1 Answer

Tuan Phan · Answer 1 · 2021-07-04T19:22:16+0000

Answer:

7.85 cm

Explanation:

The circumference of a circle can be found using the following formula.

$c=\pi d$

The diameter is 2.5 centimeters. Therefore, we can substitute 2.5 cm in for d.

$c=\pi *2.5 cm$

Now, find the circumference.

- In terms of pi:

$c=\pi *2.5 cm$

$c= (2.5)\pi cm$

$c= 2.5\pi cm$

-Using 3.14 as pi

$c=\pi *2.5 cm$

c=3.14 *2.5 cm

c=7.85 cm

-Using 3.14159... as pi

$c=\pi *2.5 cm$

c=7.85398163 cm