A truck carrying 7.8 m3 concrete arrives at a job site. A platform of width 5 m and height 2 m is being constructed at the site. Find the length of the platform constructed from the amount of concrete on the truck?
Total volume of concrete=7.8 m3
Width of the platform = 5 m
Height of the platform = 2 m
Let the length of the platform = x m
According to the question,
Volume of concrete = Volume used to make platform
⇒7.8=10x [∵ volume = length × breadth × height ]
Hence, the length of the platform is 0.78 m.