Circle Challenge: Area and Circumference for 6th Graders

A circular garden has a radius of 5 meters. What is the area of the garden?

• 25π square meters

• 30π square meters

• 15π square meters

• 20π square meters

If the same garden has a fence around it, what is the circumference of the garden?

• The circumference is always 100 meters.

• Circumference depends on the shape and dimensions of the garden.

• The circumference can be calculated using the number of plants in the garden.

• Circumference is the same as area.

A pizza has a diameter of 12 inches. Calculate the area of the pizza.

• Approximately 78.5 square inches

• Approximately 113.1 square inches

• Approximately 94.2 square inches

• Approximately 150.8 square inches

If you want to put a border around the pizza, how long will the border need to be?

• C = 2 * π * d

• C = 2 * π * r

• C = 4 * r

• C = π * r^2

A circular swimming pool has a radius of 10 feet. What is the area of the pool?

• 100π square feet

• 200 square feet

• 75π square feet

• 50π square feet

How much fencing is needed to enclose the swimming pool?

• You need to add extra fencing for landscaping.

• The amount of fencing needed is equal to the perimeter of the pool.

• The fencing should be half the area of the pool.

• The amount of fencing is determined by the depth of the pool.

A round table has a diameter of 4 feet. What is the area of the table's surface?

• 15.70 square feet

• 8.00 square feet

• 12.57 square feet

• 10.26 square feet

If you want to place a tablecloth around the table, how much fabric do you need for the circumference?

• C = 4 * s (where s is the side length of the table)

• C = 2 * π * r (where r is the radius)

• C = π * d (where d is the diameter of the table)

• C = d + 2 (where d is the diameter)

A circular track has a radius of 20 meters. Calculate the area of the track.

• 1256.64 square meters

• 400 square meters

• 1250 square meters

• 800 square meters

What is the distance around the track if you want to run one complete lap?

• 200 meters

• 400 meters

• 800 meters

• 600 meters