Circle : the parts & calculation

What is the distance around a circle called?

• radius

• circumference

• diameter

• perimeter

What is M?

• diameter

• radius

• circle

• center

What is the distance between O and P called?

• chord

• circumference

• arc

• segment

Name a diameter

• LM

• MN

• LN

• PN

What is the diameter of this circle?

• 3 cm^2

• 3 cm

• 6 cm^2

• 6 cm

Tags

CCSS.HSG.C.A.2

What is the formula to calculate the circumference of a circle?

• 2 * π * radius

• radius * radius

• 2 * π * diameter

• π * radius

Tags

CCSS.7.G.B.4

If the radius of a circle is 8 cm, what is its circumference? (Use π = 3.14)

• 40.24 cm

• 50.24 cm

• 45.24 cm

• 60.24 cm

Tags

CCSS.7.G.B.4

What is the formula to calculate the area of a circle?

• A = r^2

• A = 0.5πr^2

• A = πr^2

• A = 2πr

Tags

CCSS.7.G.B.4

Draw a chord of this circle

Draw a sector of this circle