Circles

The length around the outside of a circle is its ________.

• Circumference

• Radius

• Diameter

• Area

What is the definition of a circle?

• A set of all the points in a plane that are the same

  distance from one point in the plane.

• A set of all the points in a plane that are the same

  distance from any point in the plane.

• A round shape that contains empty space.

• A round, three-dimensional shape.

What is the diameter of a circle?

• The distance around a circle

• The distance from any point on the edge of a circle to any other point

• The distance from the center to any point on the circle

• The distance across a circle, through its center

Tags

CCSS.HSG.C.A.2

What is the radius of a circle?

• The distance around a circle

• The distance across the circle, through its center

• The distance from the center to any point on the circle

• The distance from any point on the edge of a circle to

  any other point.

Which of the following must you use to calculate

the area or circumference of a circle?

• 3

• X

• Pi

• e

Tags

CCSS.7.G.B.4

What is the circumference of a circle with a diameter

of 8 cm?

• About 35cm

• About 25cm

• About16

• About4cm

Tags

CCSS.7.G.B.4

What is the diameter of a circle with a radius of 5

cm?

• 2.5cm

• 25cm

• 5cm

• 10cm

Tags

CCSS.7.G.B.4

What is the area of a circle with a radius of 10 cm?

• About 31.4 square cm

• About 314 square cm

• About 100 square cm

• About 50 square cm

Tags

CCSS.7.G.B.4

What is the area of a circle with a diameter of 10

cm?

• About 79 square cm

• About 55 square cm

• About 125 square cm

• About 15 square cm

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 163.2
• 15.3
• 124.2
• 113.1

Tags

CCSS.7.G.B.4