Radius Circumference and Diameter

A straight line segment that passes through the center of a circle and whose endpoints lie on the circumference of the circle is called the ____.

• Diameter

• Radius

• Circumference

• Area

A straight line from the center of a circle to the circumference is called the ____.

• Diameter

• Circumference

• Radius

• Area

What is the diameter?

• 8

• 16

• 10

• 4

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

• 38 m

• 35 m

• 90 m

• 140 m

• 15.7 in

• 10 in

• 5 in

• 98.64 in

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

• 392.5 ft

• 50.24 square feet

• 100.48 square feet

• 200.96 square feet

• 25.12 square feet

Are you given a radius or diameter?

• radius

• diameter

Pi is the ​ (a)   of a circle's ​ (b)   to it's ​ (c)  

• ratio

• circumference

• diameter

• version

• radius

• chord

• area

• Pi