Geometry Canvas

Question

A round table has a diameter of 19inches. What is the square inches a table cloth must have to cover the table

Answer 1

A round table has a diameter of 19 inches.

To find the area that the table cloth must cover we need to know the formula of the area of a circle: A = π r²

"r" is the radius of the circle or table. The radius is one half of the diameter: r = 0.5 (19) = 9.5 inches

A = π (9.5)² = 90.25 π

If we use π ≈ 3.14: A = 90.25(3.14) ≈ 283.385 in²

Answer: The tablecloth must cover 283.385 in². In reality, you'd want the table cloth to hang down at least a couple of inches. You would add these inches to the radius (9.5+2 = 11.5") and get a bigger area for the tablecloth.