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A new sidewalk will be 4 feet wide 200 feet long and filled to a depth of 6 inches with concrete. how many cubic yards of concrete are needed?
Sheabutter22
each cu.yard of concrete is equal to 4 inches thick X three ft. X three ft. X 9 So 3 ft wide x 3 ft. long is equal to 4 ft wide X 2.25 ft long. Therefore 34 ft long is just over 15 of these 2.25 increments. So since there are 9 increments in a yard, you'd need 1 and 2/3 (1.66) cu.yards. for your sidewalk. Concrete is usually $85+-/yd so you might be able to only purchase $140 worth of concrete and do it with your buddies. It will be the last time they come to your house to help with a project though.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoApproximately 15 cubic yards of concrete are needed for the new sidewalk.
Volume of concrete needed = 4 feet x 200 feet x .5 feet = 400 cubic feet
400 cubic feet = 400/27 cubic yards = 14.82 cubic yards
lenpollock
Convert all to (linear) yards
4ft = 1 1/3 yds
200 ft = 200/3 = 66 2/3 yds
6 inches = 1/6 yds
Multiplication of fractions
1 1/3yds X 66 2/3yds x 1/6yd =
4/3 yds X 200/3 yds x 1/6 yds =
800 / 54 cu.yds
= 14.8148 cu.yds.
Wiki User
∙ 10y agoThe walkway will require 4.2 cubic yards of cement.
Wiki User
∙ 11y ago5 ft x 250 ft x 0.75 inches
= 5/3 yards x 250/3 yards x 0.75/36 yards
= 2.89 cubic yards approx.
Anonymous
1.66
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