A circular coffee table has a diameter of 5 ft. What will it cost to have the

top refinished if the company charges $3 per square foot for the refinishing?

Multiply 3 $/sq. ft. by the area.

The area is pi D^2/4 , which is about 19.63 sq. ft.

To calculate the cost of refinishing the top of the circular coffee table, we first need to find the area of the table's top surface.

The formula to find the area of a circle is A = πr², where A represents the area and r is the radius of the circle.

Given that the table's diameter is 5 ft, we can find the radius by dividing the diameter by 2. So, the radius (r) would be 5 ft / 2 = 2.5 ft.

Now, we can use the formula to find the area of the table's top: A = π(2.5 ft)².

Calculating the value:
A = π(2.5 ft)²
A ≈ 3.14 * (2.5 ft)²
A ≈ 3.14 * 6.25 ft²
A ≈ 19.625 ft² (rounded to three decimal places)

The area of the table's top is approximately 19.625 square feet.

To find the cost of refinishing, we multiply the area by the cost per square foot: cost = 19.625 ft² * $3 per ft².

Calculating the value:
cost = 19.625 ft² * $3 per ft²
cost ≈ $58.875

Therefore, it will cost approximately $58.88 to have the top of the circular coffee table refinished.