Radius and Diameter Formula

Is this Radius or Diameter?

• Radius

• Diameter

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

• Diameter

• Radius

What is the diameter?

• 8

• 16

• 10

• 4

Tags

CCSS.7.G.B.4

Choose the answer which best describes how these formulas are related to each other.

• They both solve for circumference. In the first formula it uses diameter, in the second formula it uses two times the radius, which is the same thing as diameter.

• They both solve for circumference, in the first uses diameter and the second uses pi.

• They both solve for area. In the first formula it uses diameter, in the second formula it uses two times the radius, which is the same thing as diameter.

• They both use circumference to solve for pi. One uses radius, the other uses diameter.

Tags

CCSS.7.G.B.4

What is a straight line that goes through the center of a circle from side to opposite side?

• Diameter

• Circumference

• Radius

• Center

What is the line that goes from the center of a circle to any point on the circle?

• Diameter

• Circumference

• Chord

• Radius

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

• Radius

• Diameter

Tags

CCSS.HSG.C.A.2

What is the radius?

• 18

• 72

• 38

• 14

Tags

CCSS.7.G.B.4

Find Circumference. Leave answer in terms of pi (π).

• 36π

• 9π

• 4.5π

• 18π

Tags

CCSS.7.G.B.4

Find Circumference. Round to the nearest hundredths.

• 40.69 yd

• 5.65 yd

• 11.30 yd

• 22.61 yd

Tags

CCSS.7.G.B.4