Circumference and Area of a Circle

a line from the center point to the edge of the circle

• diameter
• radio
• radius
• pi

Tags

CCSS.HSG.C.A.2

CCSS.HSG.CO.A.1

a line that goes from one edge of the circle to another and crosses the center point

• center
• diameter
• dime eater
• radius

Tags

CCSS.HSG.C.A.2

What does "circumference" mean?

• Space a circle takes up
• Distance around a circle
• Line from one side of a circle to another
• Line from center of circle to side

What does area mean?

• the distance around a shape
• half the distance around a shape
• the amount of space outside a shape
• the amount of space inside a shape

Tags

CCSS.3.MD.C.5

CCSS.3.MD.C.6

What is the formula for circumference of a circle?

• C = π(1/2 d)²

• C = 2πr

• C = πd

• C = πr²

Tags

CCSS.7.G.B.4

What is the formula for area of a circle?

• A = πr

• A = 2πr

• A = πd

• A = πr²

Tags

CCSS.7.G.B.4

Is the red line a radius or diameter of the circle?

• Radius

• Diameter

Tags

CCSS.HSG.C.A.2

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

Tags

CCSS.4.G.A.1

What is the radius?

• 18

• 72

• 38

• 14

Tags

CCSS.7.G.B.4

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.7.G.B.4