22.22 cubic yards
Solution:
Given data:
Length of the side walk = 240 feet
Breadth of the side walk = 5 feet
Height of the side walk = 6 inches = 0.5 feet
Volume = length × breadth × height
= 240 × 5 × 0.5
= 600 cubic feet
Volume = 600 cubic feet
Let us convert cubic feet to cubic yard.
27 cubic foot = 1 cubic yard
600 cubic feet = 600 ÷ 27
= 22.22 cubic yard
Hence 22.22 cubic yards of concrete are needed.