Circumference and Area of Circles Pretest

What is the circumference?

• 36

• 18pi

• 108pi

• 36pi

The distance around a circle; much like the perimeter of a rectangle.

• perimeter

• diameter

• circumference

• radius

What is the area of this circle?

• 82.13 m²

• 78.50 m²

• 314.16 m²

• 170.12 m²

A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's area?

• 31.25 m²

• 29.55 m²

• 30.36 m²

• 28.26 m²

What is the formula to calculate the circumference of a circle?

A circular garden has a radius of 14 meters. What is the length of the fence required to enclose it?

If a bicycle wheel rotates once and moves forward 31.4 meters, what is the diameter of the wheel?