Area and Circumference Circles

If my diameter is 19 inches, what is my radius?

• 38 inches
• 9.5 inches
• 59.66 inches
• 119.32 inches

Tags

CCSS.7.G.B.4

The radius is 8 inches.  What is the circumference?

• 50.24 inches
• 25.12 inches
• 12.56 inches
• 200.96 inches

Tags

CCSS.7.G.B.4

A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's area?

• 31.25 m²
• 29.55 m²
• 30.36 m²
• 28.26 m²

Tags

CCSS.7.G.B.4

Find the circumference of a circle with a diameter of 11 millimeters.

• 34.6 mm
• 30 mm
• 25.3 mm
• 34.54 mm

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 82.13
• 78.5
• 314.16
• 170.12

Tags

CCSS.7.G.B.4

The circumference is 62.8 inches.  What is the radius?

• 20 inches
• 10 inches
• 6.28 inches
• 31.4 inches

Tags

CCSS.7.G.B.4

A circle pool has a radius of 7.5 ft. Monica wants to know how many ft of a pool cover she needs to buy?

• 23.55 ft²
• 176.63 ft²
• 47.1 ft²
• 706.5 ft²

Tags

CCSS.7.G.B.4

Find the area of the circle

• 43.96
• 153.86
• 87.82
• 307.72

Tags

CCSS.7.G.B.4

The circumference of the clock in Jason's room is 43.96 in.

^{What would you do to determine the diameter of the clock?}

• Divide the circumference by 𝜋.

• Divide the circumference by 𝜋 to determine the radius; then divide the radius by 2.

• Divide the circumference by 𝜋 to determine the radius; then multiply the radius by 2.

• Multiply the circumference by 𝜋 .

Tags

CCSS.7.G.B.4

The definition of circumference is

• distance from the center of any point on the circle

• distance from one point to another

• distance around the circle

• distance from the center of any point on the circle