Parts of a circle last chance

What is the central point of a circle called?

• Radius
  

• diameter

• center

• circumference

Which part of a circle is a line segment that connects two points on the circle (edges) and passes through the center?

• Radius

• Tangent

• Diameter

• Chord

 The distance around a circle is called its:

• Area

• Radius

• Circumference

• Diameter

What is the formula for the circumference of a circle?

• C=πr2
  

• C=2πr

• C=2r

• C=πd

Tags

CCSS.7.G.B.4

If a circle has a radius of 5 cm, what is its diameter?

• 2.5 cm

• 5 cm

• 7.5 cm

• 10 cm

Tags

CCSS.7.G.B.4

Which formula represents the area of a circle?

• A=2πr

• A=πd

• A=πr^2

• A=2r

Tags

CCSS.7.G.B.4

If the diameter of a circle is 14 cm, what is its radius?

• 28 cm

• 7 cm

• 48 cm

• 3.5 cm

Tags

CCSS.7.G.B.4

If the area of a circle is 64π cm, what is its radius?

• 8 cm

• 16 cm

• 4 cm

• 32 cm

Tags

CCSS.7.G.B.4

In a circle, the ratio of the circumference to the diameter is always equal to:

• 2

• 4

• pi

• 6

Tags

CCSS.7.G.B.4

A semicircle is:

• one third of a circle

• one fourth of a circle

• one half of a circle

• three fourths of a circle