A hotel plans to use marble for part of the floor lobby. The marble section of the floor will be in the shape of a triangle with
a base of 80 feet and a height of 60 feet. The marble flooring costs $6 per square foot. How much will the marble for the floor cost?
2 answers:
It will cost $14,400 to do the triangle the hotel plans to do.
The area of a triangle is half the base times the height:

Thus, the area of the marble section is:

If every square foot costs $6, the total cost is:
2,400 · 6 = $14,400
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