Saturday

November 29, 2014

November 29, 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.

**Answer this Question**

**Related Questions**

8th Grade Math - I need help on the following please? A group of clowns performs...

geometry - (imageshack)123 (.)us(/)photo 123 (/) my-images 123 (/)42(/) 123 ...

Math - The area of a circus ring is about 1,385 square feet. What is the ...

Math - I need some help with this problem please!! your parents are installing a...

Math - Julie is digging a square area in her backyard for a vegetable garden. If...

7th grade math Ms. Sue please - 2. Shelly sews a blanket that has an area of 170...

math - Jana is going to install ceramic tiles in her kitchen. It measures 13' 3...

math - find the area of this ring to the nearest square unit. Show your work. ...

math - Harry planned a rectangular garden that was 40 feet long and 10 feet wide...

7th grade math help square roots - 4. Wei-Min makes a square quilt that has an ...