Answer: 0.14 cubic meters
To cover the rectangular yard with a concrete layer one tenth of a meter thick, we need to find the volume of concrete required, which can be calculated as:
Volume = area * thickness
The area is the product of the length and width of the rectangular yard, and the thickness is one tenth of a meter.
The length of the rectangular yard is given as 0.2 meters, the width is given as 7 meters, and the thickness is 0.1 meters.
So, the volume of concrete is:
Volume = 0.2 meters * 7 meters * 0.1 meters = 0.14 cubic meters
Hope this helps!