Circumference & Area Practice #2

What is the area of this circle? Use 3.14 for pi.

• 62.8 in²

• 31.4 in²

• 314 in²

• 985.96 in²

How much orange paint is needed to paint the entire circle?

Painting the entire circle represents ​ (a)   and you need

(b)   of paint.

• 50.24 cm2
• 25.12 cm²

• 200.96 cm²

• area
• circumference

How much fencing is needed to go around the entire garden?

• 87.92 in

• 615.44 in

• 43.96 in

• Fence - circumference

• Fence - area

A circle has a radius of 6 inches.  What is the circumference of the circle?

• 3π

  or 9.42 in

• 6π

  or 18.84 in

• 12π

  or 37.68 in

• 36π

  or 113.04 in²

A city is designing a new garden. A scale drawing of the garden is shown below. What is the circumference of the garden?

*First, think 50 cm = ? feet

• 628 feet

• 200 feet

• 100 feet

• 542 feet

Isabella cut a circular piece of wood for a table top. The radius of the table top is 4 feet. What would the area of the table top to the nearest hundredth of a square foot?

Use 3.14 for 𝜋.

A large pizza has a diameter of 14 inches. A medium pizza has a diameter of 10 inches. How much larger is the area of the large pizza than the area of the medium pizza?

Round your answer to the nearest hundredth of an inch.

Use 3.14 for 𝜋.

• 12.56 in²

• 50.24 in²

• 75.36 in²

• 78.50 in²

• 153.86 in²

The circumference of the wheel on Roy's bicycle is 225 in.

What would you do to determine the radius of the wheel?

• Divide the circumference by 𝜋.

• Multiply 2 and 3.14. Then divide the circumference by the product.

• Multiply the circumference by 𝜋.

Find the area of the circle. Use 3.14 for pi.

_________ in²

Mathematical Equivalence

ON