Let's break down the problem step-by-step.
1. Determine the dimensions of the basketball court:
- Length: 125 feet
- Width: 70 feet
2. Calculate the total area of the court:
- To find the area of a rectangle, multiply the length by the width.
- [tex]\[ \text{Total Area} = 125 \, \text{feet} \times 70 \, \text{feet} = 8750 \, \text{square feet} \][/tex]
3. Allow for 20% waste:
- We need to include an additional 20% of the total area to account for waste.
- [tex]\[ \text{Waste Area} = 8750 \, \text{square feet} \times 0.20 = 1750 \, \text{square feet} \][/tex]
4. Calculate the total area needed including waste:
- Add the waste area to the initial total area.
- [tex]\[ \text{Total Area with Waste} = 8750 \, \text{square feet} + 1750 \, \text{square feet} = 10500 \, \text{square feet} \][/tex]
So, the total amount of flooring you need to order for the job is 10,500 square feet. Therefore, the correct answer is:
D. 10.500 sq. ft.