Area and Circumference of Circles

Which segment is a radius?

b

DC

LM

ML

BD

Tags

CCSS.HSG.C.A.2

Which segment is the diameter?

c

CE

BD

CD

Tags

CCSS.HSG.C.A.2

If my diameter is 25 inches, what is my radius?

If my radius is 7ft, what is my diameter?

Tags

CCSS.7.G.B.4

what is the circumference of this circle ?

• 3.14 cm 
• 37.68 cm
• 24 cm
• 68.4 cm

Tags

CCSS.HSG.GMD.A.1

Enrique purchases an antique bowl for his mom for Mother's Day. The diameter of the bowl is 18 cm. What is the circumference of the bowl? (Round to the nearest whole number.)

• 28 cm
• 57 cm
• 254 cm
• 1017 cm

Tags

CCSS.HSG.GMD.A.1

Match the following term to the definition

• Circumference

• half the distance through a circle

• Diameter

• A line through a circle that does not pass through the center

• Area

• the distance around a circle

• Chord

• The full distance through a circle passing through the center

• Radius

• the amount of space inside a circle

Tags

CCSS.HSG.CO.A.1

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

• 66 cm²

• 78.5 cm²

• 66.5 cm²

• 314 cm²

Tags

CCSS.7.G.B.4

Match the term to the formula used to find each

• Area

• Circumference

• Radius

• Diameter

• 2r

Tags

CCSS.HSG.GMD.A.1

A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's area?

• 31.25 m²
• 29.55 m²
• 30.36 m²
• 28.26 m²

Tags

CCSS.7.G.B.4