Circle Area & Circumference Challenge for Grade 6

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

• 15π square meters

• 25π square meters

• 30π square meters

• 20π square meters

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

• Circumference is always a fixed value.

• Circumference can only be calculated for circular gardens.

• The circumference is equal to the area of the garden.

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

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

• 94.2 square inches

• 78.5 square inches

• 113.1 square inches

• 150.8 square inches

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

• C = π * r^2

• C = 2 * r

• C = π * d

• C = 2 * π * r

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

• 200 square feet

• 50π square feet

• 100π square feet

• 75π square feet

How much fencing is needed to enclose the swimming pool (circumference)?

• The pool does not require any fencing.

• The fencing needed is a fixed length of 50 meters.

• The amount of fencing needed depends on the dimensions of the pool.

• Fencing is only needed for rectangular pools.

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

• 12.57 square feet

• 8.00 square feet

• 10.24 square feet

• 15.70 square feet

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

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

• C = π * (d + 1) (where d is the diameter of the table)

• C = d * 2 (where d is the diameter of the table)

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

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

• 800 square meters

• 400 square meters

• 1250 square meters

• 1256.64 square meters

What is the distance around the track (circumference)?

• C = π * d

• C = 2 * π * r

• C = 2 * r

• C = π * r^2