Answer:
$107.1
Step-by-step explanation:
The problem has dimension in feet while concrete cost is given in yards so first step is to convert dimensions into yard.
dimensions of rectangular pedestal = (nine feet long, nine feet wide, and six inches high)
1 feet = 0.33 yard
9 feet = 9 * 0.33 yard = 3 yard
1 inch = 0.0277778 yard
6 inch = 6 * 0.0277778 yard = 0.166667 yard = 0.17 yard ( rounded to two decimal points)
Volume of cuboid is = length * width * height
the pedestal has rectangular base hence combine with height , it is cuboid structure.
Volume of rectangular pedestal = 3 yard * 3 yard * 0.17 yard = 1.53 cubic yard
cost of one cubic yard = $70
cost of 1.53 cubic yard = $70 * 1.53 = $107.1
$107.1 is the cost of the concrete in the
pedestal.
