Radius & Diameter Review + Inequalities

I am sorry I am not here today! We will have our short inequalities quiz tomorrow.

You may try this Wayground multiple times. I have hints on the first few to help you out.

You may want paper for the end.

• I am ready! I have paper for the end.

• I do not have paper, but am getting some.

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

• Radius
• Diameter

Answer explanation

Radius is a measure from the center to the edge of a circle.

Diameter is the measure across a circle through the center.

Tags

CCSS.HSG.C.A.2

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

• Radius
• Diameter

Answer explanation

Remember, radius is from the center of the circle to the edge. It looks like it is halfway across a circle.

What is the diameter?

• 5 in

• 10 in

• 3.14 in

What is the circle's radius?

• 3 m

• 6 m

• 12 m

Is this radius or diameter?

• Radius

• Diameter

What is the radius of a circle when the diameter is 70 m?

What is the radius?

• 8 mm

• 4 mm

• 16 mm

What is the radius?

Swimming from one side of this pool through the center to the other side is 12 feet. What is the radius of this pool?

• 24 ft

• 6 ft

• 12 ft