Answer:
Cost C = $380
The white marble section will cost $380
Completed question:
A bank is getting a new marble floor that is green and white. The width of the floor is 8 feet. A white marble triangle will extend 10 feet into the area. White marble costs $9.50 per square foot. How much will the white marble section cost?
Step-by-step explanation:
The area of a triangle can be written as;
Area A = bh/2
Where;
b = base width
h = height
Given;
b = 8 ft
h = 10ft
Substituting the values;
A = 8 × 10/2
A = 40 ft^2
Cost of white marble;
Cost C = Area × cost per square foot
C = 40 × $9.50
Cost C = $380
