Area of a Circle from Diameter or Radius

What is the area of a circle?

• The distance around a circle.

• The space inside the circle.

• A line from side to side passing through the center.

• A line from the center to the side.

If you draw line through the center of the circle, to its edges, that can be called its ...

• Radius

• Diameter

• Circumference

Tags

CCSS.HSG.C.A.2

If my radius is 10ft, what is my diameter?

• 20ft

• 5ft

• 31.4ft

• 62.8ft

Tags

CCSS.7.G.B.4

If my diameter is 19 inches, what is my radius?

• 38 inches

• 9.5 inches

• 59.66 inches

• 119.32 inches

Tags

CCSS.7.G.B.4

What is the diameter?

• 8

• 16

• 10

• 4

Tags

CCSS.7.G.B.4

What is the radius?

• 18

• 72

• 38

• 14

Tags

CCSS.7.G.B.4

To find the circumference of a circle, you must multiply the ________________ by 3.14.

• circumference

• area

• radius

• diameter

Tags

CCSS.7.G.B.4

What is the circumference of a circle with a diameter of 9?

• 81pi

• 9pi

• 3pi

• 6pi

Tags

CCSS.7.G.B.4

What is the radius if the diameter is 27?

• 135

• 13.5

• 1.35

• I do not know

Tags

CCSS.7.G.B.4

If you multiply π × r × r  then you will get the...

• radius

• diameter

• circumference

• area

Tags

CCSS.7.G.B.4