Question

1. a construction company is building concrete pillars at the entrance of an auditorium. each pillar requires 5.75 cubic yards of concrete. how many cubic yards will be required to construct 9 pillars?

Explanation:

Step1: Identify the operation

We need to find the total cubic yards of concrete for 9 pillars, given each pillar needs 5.75 cubic yards. So we multiply the amount per pillar by the number of pillars.

Step2: Perform the multiplication

The formula is \( \text{Total} = \text{Amount per pillar} \times \text{Number of pillars} \). Substituting the values, we get \( 5.75 \times 9 \).
Calculating \( 5.75 \times 9 \):
First, \( 5 \times 9 = 45 \), \( 0.75 \times 9 = 6.75 \). Then add them together: \( 45 + 6.75 = 51.75 \).

Answer:

51.75 cubic yards