Circumference and Areas of Circles Quiz

What does the circumference of a circle measure?

• The area inside the circle

• The radius of the circle

• The diameter of the circle

• The distance around the circle

What is the correct formula for the circumference of a circle using the radius?

• C = πr

• C = 2πr

• C = 2πd

• C = πd

Tags

CCSS.7.G.B.4

What unit is used to measure the circumference of a circle?

• Cubic units

• Square units

• No units

• Linear units

Tags

CCSS.2.MD.A.1

What is the circumference of a circle with a radius of 8 miles?

• 25.1 miles

• 50.3 miles

• 100.6 miles

• 16.0 miles

Tags

CCSS.7.G.B.4

For a circle with a radius of 8.3 yards, what is its circumference?

• 26.1 yards

• 16.6 yards

• 52.2 yards

• 104.4 yards

Tags

CCSS.7.G.B.4

How is the circumference formula adjusted when given the radius instead of the diameter?

• Multiply the radius by π

• Square the radius and multiply by π

• Divide the radius by 2 and then multiply by π

• Multiply the radius by 2 and then by π

Tags

CCSS.7.G.B.4

If the radius of a circle is 4.2 yards, what is the circumference?

• 52.8 yards

• 26.4 yards

• 13.2 yards

• 8.4 yards

Tags

CCSS.7.G.B.4

How do you calculate the circumference if the radius is 9.5 inches?

• C = 19π inches

• C = 9.5π inches

• C = 38π inches

• C = 4.75π inches

Tags

CCSS.7.G.B.4

What is the rounded circumference of a circle with a radius of 11.1 feet?

• 69.7 feet

• 22.2 feet

• 44.4 feet

• 34.8 feet

Tags

CCSS.7.G.B.4

If a circle has a radius of 9.3 inches, what is its approximate circumference?

• 18.6 inches

• 58.4 inches

• 29.2 inches

• 116.8 inches

Tags

CCSS.7.G.B.4