Circumference and Area of a Circle Review (3rd)

what is the circumference of this circle ?

• 3.14 cm 
• 37.7 cm

• 24.3 cm

• 68.4 cm

Fill in the blank:

The Diameter is the line segment that goes from _______________ and through the center of a circle

• center

• edge to edge

• distance

• ratio

Find the circumference of the circle.

• 100.4 m

• 95.46 m

• 58.1 m

• 173.1 m

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

• Radius

• Diameter

Match each one to its correct formula.

• C= 2πr

• Area of a Circle given the Diameter

• Area of a Circle given the Radius.

• A= πr²

• Circumference of a Circle given the Radius

• C= πd

• Circumference of a Circle given the Diameter.

Fill in the blank:

The radius is the line segment that goes from _______________ to the edge of the circle

• ratio

• edge to edge

• distance

• the center

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

• Radius

• Diameter

What is the circumference of the circle?

• 88 in
• 86 in

• 84 in

• 89 in

Find the area of the circle.

Which do you find easier, finding the circumference or area of a circle?

• Finding the area of a circle

• Finding the circumference of a circle