Question

A cement walk 3 ft wide is placed around the outside of a circular pond with radius 17 ft. What is the total cost of the walk if the cost per square foot is $1.66 ? A. $582.73 B. $581.15 C. $579.90 D. $583.38 E. $578.87

Answer 1

Answer:

$578.87

Step-by-step explanation:

Find the area made by the circle made by the 3 ft. walk:

Radius = 17 + 3 = 20

Area = 22/7 x 20 x20 = 1257.14

Find the area made by the pond:

Area = 22/7 x 17 x 17 = 908.29

Subtract area 2 from area 1:

1257.14 - 908.29 = 348.85

Muliply this area by the cost er squar foot:

348.85 x $1.66 = 579.09

It depends on the value of pi used