Answer:
The total cost of the topsoil to completely full the planter is $ 3.15
Step-by-step explanation:
Volume of the prism = 157.5 cubic inches
Cost of the topsoil per cubic inch = $ 0.02
Therefore, the total cost of the topsoil is:
Volume of the prism * Cost of the topsoil per cubic inch
Replacing with the values we know:
Total cost = 157.5 * 0.02
Total cost = $ 3.15
The total cost of the topsoil to completely full the planter is $ 3.15