Math  Please help
posted by Christopher .
I need help on the following please?
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
Hi 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
Omg 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.
Respond to this Question
Similar Questions

Math Help Please
The concentric circles, or growth rings, represent the crosssection of a tree with a diameter of 16 centimeters. The width of the outer tree ring measures 2 centimeters. What is the area in square centimeters of the outer ring of … 
math
find the area of this ring to the nearest square unit. Show your work. The image shows a ring, the inside raius is 2.0m, and the outside radius is 3.2m. The area of the ring is... plz help!! thx. 
physics
please,i need help on this question:a thin circular ring of radius 20cm is charged with a uniform charge density(rho),if a small section of 1cm length is removed from the ring.calculate the electric field intensity at the center of … 
math
the inner circumference of a ring is 1.2pi cm. the outer circumference of the ring is 2pi cm. find the area of the region bounded by the outer and inner circumference. 
Math
The area of a circus ring is about 1,385 square feet. What is the circumference of the ring? 
8th Grade Math
I need help on the following please? A group of clowns performs in a ring with an area of about 2,123 square feet. What is the circumference of the ring? 
math
A two dimensional picture of a circular onion ring is shown at the right. The inner radius of the onion ring is x cm. and the thickness of the ring is 1 cm. Which of the numbered choices represents the area, in square centimeters, … 
math
A two dimensional picture of a circular onion ring is shown at the right. The inner radius of the onion ring is x cm. and the thickness of the ring is 1 cm. Which of the numbered choices represents the area, in square centimeters, … 
Science Help!
Which of the following is true about the atom shown Choose two that apply. The picture shows one big red one in the middle with one blue ring on the outside that had 2 smaller red ones, and another blue ring outside of the first blue … 
geometry
What is the surface area of a cylindrical ring if its outside diameter is 16 mm and its inside diameter is 10 mm?