Area and Circumference of a Circle

What is the Area Formula for a Circle?

• A = $\pi$ * r

• A = $\pi$ * r * r

• A = $\pi$ * d

• A = 2 * $\pi$ * r

Tags

CCSS.7.G.B.4

What are the Circumference Formulas for a Circle? 

• C = $\pi$ * d

• C = $\pi$ * r * r

• C = 2 *  $\pi$ * d

• C = 2 * $\pi$ * r

Tags

CCSS.7.G.B.4

How do you find the diameter of a circle?

• radius = 2 * diameter

• diameter = 2 * radius

• radius = diameter $\div$ 2

• diameter = radius $\div$ 2

Tags

CCSS.7.G.B.4

How do you find the radius of a circle?

• radius = 2 * diameter

• diameter = 2 * radius

• radius = diameter $\div$ 2

• diameter = radius $\div$ 2

Tags

CCSS.7.G.B.4

What is the line on the circle called?

• Area

• Circumference

• Diameter

• Radius

Tags

CCSS.HSG.C.A.2

What is the line on the circle called?

• Area

• Circumference

• Diameter

• Radius

Tags

CCSS.HSG.C.A.2

What is the Area of a circle with a RADIUS of 7 cm?

• 43.96 cm

• 153.86 cm

• 43.96 cm²

• 153.86 cm²

Tags

CCSS.7.G.B.4

What is the Area of a circle with a RADIUS of 15 cm?

• 706.5 cm

• 94.2 cm

• 706.5 cm²

• 94.2 cm²

Tags

CCSS.7.G.B.4

What is the Area of a circle with a RADIUS of 3.5 cm?

• 38.465 cm²

• 94.2 cm

• 21.98 cm

• 21.98 cm²

Tags

CCSS.7.G.B.4

What is the Circumference of a circle with a RADIUS of 2.5 cm?

• 15.7 cm²

• 15.7 cm

• 19.625 cm

• 19.625 cm²

Tags

CCSS.7.G.B.4