Circumference and Area of Circles Real World

An architect is making a plan for a new circular playground. If the picture below is the playground, how much fencing needs to go up to keep the kids in the circle? Use 3.14 for π.

• 3,215 m

• 201 m

• 402 m

• 100 m

The radius of a birthday cake is 4 inches. Icing will decorate the circumference of the cake. What procedure can be used to find the approximate circumference of the cake? Use 3.14 for π.

• Multiply 4 by 3.14.

• Multiply 4 by 2, and then multiply the product by 3.14.

• Multiply 4 by 4, and then multiply the product by 3.14.

• Divide 4 by 2, and then multiply the quotient by 3.14.

What is the circumference of a circle with a diameter of 8 inches?

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

The circumference of a circular track is 440 meters. What is the track's radius?

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?