SOLUTION: A sidewalk is to be placed around a circular fountain whose diameter is 30 feet.The width of the sidewalk is 6ft.A contractor will charge $2.48 per sq.ft.to construct the sidewalk.
Algebra.Com
Question 1012395: A sidewalk is to be placed around a circular fountain whose diameter is 30 feet.The width of the sidewalk is 6ft.A contractor will charge $2.48 per sq.ft.to construct the sidewalk.What will be the cost to construct the sidewalk?
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
.
Area of sidewalk=Area of sidewalk and fountain - area of fountain
.
Diameter of fountain + sidewalk=30 ft + 12 ft=42 feet
Radius of fountain + sidewalk = 21 feet
Radius of fountain = 15 feet
.
Area of sidewalk=
Area of sidewalk=
Area of sidewalk=
Area of sidewalk=
Area of sidewalk=678.58 ft^2
.
Cost of sidewalk= Area x cost per unit area
Cost of sidewalk= 678.58 ft^2 x $2.48 per ft^2
Cost of sidewalk= $1682.88
.
RELATED QUESTIONS
The diameter of a circular fountain in a city parks 28 feet. A sidewalk that is 3.5 will... (answered by josgarithmetic,ikleyn)
a circular flower bed is 6 m in diameter and has a circular sidewalk around it 1 meter... (answered by JBarnum)
Your community wants to put a square fountain in a park. Around the fountain will be a... (answered by josmiceli)
A circular flower garden has a diameter of 18 ft. Around the garden there is a circular... (answered by nerdybill)
A circular flower garden has a diameter of 18 ft. Around the garden there is a circular... (answered by Alan3354)
Which quadratic equation below could be used to represent the following situation?... (answered by ikleyn)
A circular swimming pool has a diameter of 60 feet, and is surrounded by a concrete... (answered by ikleyn)
A rectangular flower garden
in a park is 30 feet wide and 40 feet long. A sidewalk
(answered by FrankM)
A rectangular flower garden in a park is 30 feet wide and 40 feet long. A sidewalk around (answered by friesr)