12-1 and 12-2 Review

The radius is:

• a line that crosses through the center and touches each edge

• the center point of a circle

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

• an element in science

The diameter of a circle is:

• The measurement around the circle.

• The distance from an edge of a circle to another edge.

• The distance from the center of the circle to an edge of a circle

• The distance from an edge of a circle to another edge through the center.

The circumference of a circle is:

• The measurement from an edge of a circle to another edge.

• The measurement around the circle

• The measurement from an edge of a circle to another edge going through the center

• The measurement from the center of the circle to an edge of the circle

Does this picture show the diameter or radius of a circle?

• Diameter

• Radius

Does this picture show the diameter or radius of a circle?

• Diameter
• Radius

What is the RADIUS of a circle with diameter 24 cm?

• 24cm

• 48cm

• 12cm

Find the circumference of a circle with a radius of 13.5 mm.

• 37.68mm

• 18.84mm

• 84.8 mm

• none of the above

The Jones family wants to enclose their circular garden with a fence. To the nearest foot, what is the minimum length of fencing they need to buy?

• 56.25 ft

• 246.2 ft

• 365.56 ft

• 392.7 ft

Find the circumference with a diameter of 18.4 km.

• 23.7 km

• 57.8 km

• 19.3 km

• 59.1 km

Find the circumference with a radius of 5.8 cm.

• 37 cm

• 38.3 cm

• 36.4 cm

• 42.7 cm