Circle Circumference and Area

What is π ? (Best Choice)

• The ratio of the circumference of any circle to its diameter.

• Exactly 3.14

• Exactly 3.1415

• Exactly 3.141593

Tags

CCSS.HSG.GMD.A.1

What is circumference?

• The distance around a circle.

• The space inside the circle.

• The length of the straight line segment that passes through the center of the circle and whose endpoints lie on the circle.

• The line from the center of a circle to any point on its edge.

A Circle has a radius of 4.  What is the area of the circle? (Best Choice) (note: units are squared)

• 4π or about 12.56

• 16π or about 50.24

• 2π or about 6.28

• 8π or about 25.12

Tags

CCSS.7.G.B.4

Find the circumference of the circle

• 87.82in

• 153.86in

• 43.96in

• 307.72in

Tags

CCSS.7.G.B.4

A Circle has a radius of 6 inches.  What is the circumference of the circle? (Best Choice)

• 3π or about 9.42 in

• 6π or about 18.84 in

• 12π or about 37.68 in

• 36π or about 113.04 in 

Tags

CCSS.7.G.B.4

• 25.12 inches

• 12.56 inches

• 50.24 inches

• 31.4 inches

Tags

CCSS.7.G.B.4

The Jones family wants to enclose their circular garden with a fence. To the nearest foot, what is the minimum length of fencing they need to buy?

• 56.25 ft

• 246.2 ft

• 365.56 ft

• 392.5 ft

Tags

CCSS.7.G.B.4

Calculate the circumference of a circle whose radius is 4 inches.

• 25.12 inches

• 12.56 inches

• 8 inches

• 50.24 inches

Tags

CCSS.7.G.B.4

A circle has a radius of 14 cm. What is its circumference?

• 44 cm

• 88 cm

• 87.92 cm

• 28 cm

Tags

CCSS.7.G.B.4

A Circle has a radius of 12 inches.  What is the circumference of the circle? (Best Choice)

• 24π or about 75.36 in

• 12π or about 37.68 in

• 144π or about 452.16 in

• 576π or about 1,808.64 in 

Tags

CCSS.7.G.B.4