Answer:
93.75 feet³
Explanation
To know how much concrete you need, we will calculate the volume as follows
Volume = Length x Width x Height
Where the length and width are the measures of the courtyard and the height is 1/4 foot.
So, replacing length = 15 feet, width = 25 feet and height = 1/4 foot, we get:
Volume = 15 x 25 x 1/4
Volume = 93.75 feet³
Therefore, you need 93.75 feet³ of concrete
