9.1 and 9.2 Area and Circumference Review

Calculate the circumference of the circle shown.

Use 3.14 for pi.

• 3.5 units
• 21.98 units
• 43.96 units
• 153.86 units

Alexandria has a circular pizza that has a diameter of 10 inches.

How much crust is around the edge of the pizza?

Use 3.14 for pi.

• 31.4 inches
• 314 inches
• 78.5 inches
• 15.7 inches

The radius of a circular swimming pool is 7.8 meters.

Which is closest to the circumference of the swimming pool?

• 24.49 meters
• 47.76 meters
• 48.98 meters
• 191.04 meters

The diameter of a circular table is 16 feet.

Which of the following represents the number of feet it would take to go around the tabletop?

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What is the circumference of circle with a diameter of 20 feet?

• 62.8 feet
• 125.6 feet
• 3.14 feet
• 40 feet

Mrs. Harper made a pizza with a 9-inch radius.

What is the approximate circumference of the pizza?

• 28 inches
• 57 inches
• 162 inches
• 254 inches

Claire wants to cover this circle with colorful paper.

How much paper will she need to cover the whole circle?

• 254.34 square inches
• 56.52 square inches
• 113.04 square inches
• 2826 square inches

A circular pool has a radius of 13 meters.

At least how big would the pool cover need to be to cover the entire pool?

Use 3.14 for pi.

• 81.64 square meters
• 2,122.64 square meters
• 40.82 square meters
• 530.66 square meters

The diameter of a circular table is 6 feet.

Which of the following is closest to the area of the tabletop?

• 113.04 square feet
• 28.26 square feet
• 18.84 square feet
• 9.42 square feet

Which of the following is closest to the area of a circle with a diameter of 9 cm?

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