Circles and Spheres Area and Circumference

What is circumference?

• 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.

The circumference is 62.8 inches.  What is the radius?

• 20 inches

• 10 inches

• 6.28 inches

• 31.4 inches

Find the area of the circle

• 43.96

• 153.86

• 87.82

• 307.72

Find the circumference of the circle

• 87.82

• 153.86

• 43.96

• 307.72

A circular pie has an area of 706.5 cm². What is the radius of the pie?

• 225 cm

• 30 cm

• 15 cm

• 112.5 cm

What is the diameter?

• 8

• 16

• 10

• 4

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.

How do you find the radius?

• π*2

• d/2

• π*r

• I do not know

What is circumference?

• The distance around a circle.

• The space inside the circle.

• The length of the straight line segment that passes through the center of the circle and whose endpoints lie on the circle.

• The line from the center of a circle to any point on its edge.

What is the diameter of this circle?

• 8cm

• 16cm

• 10cm

• 4cm