SOLUTION: A circular garden has a radius of 16 feet. You want to lay a concrete sidewalk 2 feet wide around the entire garden. If the walk will be 3 inches thick, how many yards of concrete
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Question 958499: A circular garden has a radius of 16 feet. You want to lay a concrete sidewalk 2 feet wide around the entire garden. If the walk will be 3 inches thick, how many yards of concrete will you need to order?
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
inside walk radius=r=16 ft=5.33yd; outside walk radius=R=18ft=6yds
A=Area of walk=(area of outside circle)-(area of inside circle)
=
Area x Thickness will give volume Thickness=0.083yds
=
ANSWER: You will need 1.99 yards of concrete for the walk.
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