Wednesday

April 23, 2014

April 23, 2014

Posted by **Christopher** on Friday, April 12, 2013 at 11:57pm.

A group of clowns performs in a ring with an area of about 2,123 square feet. What is the circumference of the ring? Choose the closest answer.

156 ft.

52 ft.

163 ft.

82 ft.

Thank You. Please explain the answer

- Math - Please help -
**Meenaakshi**, Saturday, April 13, 2013 at 12:52amHi Christopher,

Let me explain the method of solving this problem:

Given the area of the ring = 2123 ft^2

The formula for area is pi*r^2, where r is the radius

Therefore,we need to find the r based on the area given

2123 ft^2 = pi*r^2 (work this out using calculator)

r^2 = (2123ft^2)/pi

r = 26 ft

We now know what is r.The formula of circumference of a circle is pi*D,where D is the diameter & we all know that diameter = 2*radius

So, D = 2*26ft = 52 ft

Hence, circumference = pi*D

= pi*52ft

= 163.36 ft

The closest answer is 163 ft.Thats all!

Hope my explanation has made you understand clearly. Good luck :)

- Math - Please help -
**Shaniqua**, Saturday, April 13, 2013 at 12:52amOmg I hate clowns haha.

So the area of a circle is A=pi(r^2), and you know that the area of the circle is 2,123 square feet, right? So just set them equal as 2,123=pi(r^2), and solve for r, or the radius.

Just divide both sides by pi and then square root both sides. Now that you have your radius, plug it in to the circumference formula, C=pi(d), d being the diamater.

You would multiply the radius by two, since the radius is half the diameter, and then multiply that by pi.

Hope it works! If you can, try to use the pi button, not just 3.14, since it makes it more accurate.

**Related Questions**

math - I need to simplify the following rational exponent: (64n^9)^2/3 I've done...

9th grade math - Hey i need help on my math hw i just dont get it lol please ...

math i need help please - determine sums of following geometric sequences... A...

MATH I NEED HELP PLEASE! - DETERMINE THE SUM OF THE FOLLOWING GEOMETRIC SERIES...

math (please double check my answers) - Simplify the following using the laws of...

psy - hi, i need help on this assigments can you help me please i need to find ...

Math - Hey i need help on my math hw i just dont get it lol please help me! Here...

Languagge - I need websites badly please help. For the following: cultural ...

college algebra--I really need help!! - solve the following exponential equation...

Math-PLEASE HELP!! - I have two questions That I need help with please!! 1. ...