ColtPeale ColtPeale
  • 19-09-2018
  • Mathematics
contestada

A circular fountain 10 feet in diameter has a walk 3 feet wide paved around it. What is the area of the walk?

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 19-09-2018

The diameter of the centerline of the walkway is 13 ft, so the circumference of that circle is 13π feet. The area of the walk is the product of its centerline length and its width:

A = (13π ft)·(3 ft) = 39π ft² ≈ 122.5 ft²

_____

You can get there also by subtracting the area of the fountain circle from the area of the circle containing walkway and fountain.

... A = (π/4)d² . . . . . . . area for a circle of diameter d

... A = (π/4)((16 ft)² -(10 ft)²) = 39π ft² . . . . . . area difference of interest

Answer Link

Otras preguntas

How to do long division with polynomials?
What is 3/5 x 3/5=?
An organization needs to maintain data files of its employees in the form of tables. They also need to access and update over the company network. Which type of
What does treacherous mean
Explain why living a healthy lifestyle is the most important step in preventing cardiovascular disease.
Check all that apply: Vertical angles must ________ A. Be a linear pair B. Have the same vertex C. Be adjacent D. Be congruent
The majority of ____ victims are killed by ____. A. Suicide; hanging B. Homicide; motor vehicles C. Homicide; firearms D. Fashion; polyester I know it's not D
all real square roots of 0.0009
taylor buys a hat 15% off he says the total he will pay will be equal to 75% of the regular price of the hat. is he correct?
The or false all factors that influence our physical fitness can be controlled