122k views
3 votes
The diameter of a quarter is 2.5 cm. What is it’s circumference?

User Xuanji
by
7.9k points

1 Answer

5 votes

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

User Tuan Phan
by
8.3k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories